Gemstone Information A-Z
Number of Articles: 250
Abalone Pearls; Rare Iridescent Treasures o...
Abalone pearls are extremely rare pearls that come from a marine gastropod and often exhibit beautiful, iridescent blue and green colors, like their attractive sh...
About Agate Stone
Agate is a form of chalcedony quartz that forms in concentric layers in a remarkable variety of colors and textures.
About Amblygonite Gemstones
Amblygonite is a common mineral but a rare gemstone, since transparent specimens are unusual
Actinolite Cats Eye Gemstone Information
Actinolite cat's eye information; history, origin & sources: Actinolite gemological properties identification, mythology, cleaning care. Buy actinolite online.
Agate Gemstones Information
Agate Gemstone Info. Agates chalcedony quartz. Learn how to care for agate. Agate origins, crystal healing powers, agate mythology and sources of agate.
Agate Geode Gemstone Information
Agate Geode Gemstone Information: About Agate Geode value, origins, sources, powers and mythology. Identify and care for Agate Geodes.
Agatized Fossil Coral
Fossil coral is a natural stone that is formed when ancient coral is gradually replaced with agate. The proper name for this material is agatized fossil coral.
Alexandrite Gemstone Information
Alexandrite Gemstone Info: About alexandrite value, origin, sources, crystal healing power, mythology, and how to identify and care for alexandrite gems, rings an...
All about Garnet - More than January's Birt...
All about Garnet is a description of all the different gem types in the Garnet family - talks about the value of garnet in regards to collecting and jewelry.
Almandine Garnet Gemstones Information
Almandine Garnet Gemstone Information: Learn about almandine garnet value, origin, sources, crystal healing powers, mythology - how to care - almandine garnet.
Amazonite Gemstone Information
Amazonite Gemstone Information: Learn about amazonite value, origin, sources, crystal healing powers and mythology, and how to identify and care for amazonite and...
Amber Gemstone Information
Amber Gemstone Information. Learn about amber gemstone including origin, value, rings, jewelry and care. Amber is an organic gem often cut as cabochons
Amethyst Gemstone Information
Amethyst Gemstone Information: Learn about violet amethyst quartz history and value. Learn about treatments and how to care, identify for purple amethyst
Ametrine from Bolivia
Natural ametrine comes almost entirely from one location, the Anahi mine in Bolivia. New cutting styles are making this unique gem even more popular.
Ametrine Gemstones Information
Ametrine Gemstone Information: Bicolor ametrine gem value, sources & crystal healing. Identify & care for ametrine (citrine and amethyst). Buy Ametrine Gemstone
Ammolite Gemstones Information
Ammolite Gemstone Information: Iridescent ammonite fossil value, origin, meanings & crystal powers. Buy, shop and identify organic ammolite gems fossils.
Andalusite Gemstone Information
Andalusite gemstone information; history, origin, sources & value. Learn gemological properties, identification, mythology, cleaning & jewelry care. Buy andalusit...
Andesine Labradorite Gemstone Information
Andesine Labradorite Information: Andesine origins, history, value, gemological properties & crystal powers and meanings - learn how to clean, identify & buy ande...
Apatite Gemstone Information
Apatite Gemstone Information: Learn about natural apatite: origin, value, sources & metaphysical crystal healing powers. How to identify & care for apatite
Apatite is an unusual mineral, being one of the few produced and used by the human body. As a gemstone, the neon blue-green color from Madagascar has become popular.
Aquamarine Gemstone Information
Aquamarine Gemstone Information: Natural aquamarine beryl gemstone origin & value. Crystal healing, metaphysical powers & how to care for gems - GemSelect
Aventurine is used for several kinds of gemstones which bear a resemblance to aventurine glass from Italy.
Aventurine Gemstone Information
Aventurine Gemstone Information: Aventurine quartz value, gemological properties, crystal meanings; buying, identifying & caring for aventurine
Axinite is a gem notable for its strong vitreous luster and its unusual crystal structure
Axinite Gemstone Information
Axinite Gemstone Information. Axinite value, origin, gemological properties, crystal meanings. How to clean, identify axinite gems at GemSelect.
Azotic Topaz Gemstone Information
Azotic Topaz Gemstone Information. Learn about Azotic topaz sources, origin, colors, and crystal powers. Buy 100 % natural Azotic Topaz at wholesale prices.
Azurite Gemstone Information
Azurite Gemstone Information: Azurite sources, origin and blue azure color. Learn about azurite gemology, crystal powers, and how to identify and care for azurite...
Beryl Gemstone Information
Precious Golden Beryl Heliodor Information. Yellow golden beryl origin, sources, properties, crystal powers and meanings. Learn to identify and care for beryl gems.
Beryl Gemstones: Emerald, Aquamarine, Golde...
Emerald is the best known variety of beryl, but the species includes a number of other fine gems, including aquamarine, golden beryl, morganite and bixbite.
Bixbite: Red Beryl
Also known as red emerald, bixbite is a very rare gemstone found only in the Wah Wah mountains of Utah
Black Opal Gemstone Information
Black Opal Gemstone Information: Black Opal value, gemological properties, crystal meanings; buying, identify & caring for black opal
Very few gemstones occur in black. Onyx is the most common, but among the finer gems, black tourmaline can make stunning jewelry.
Bloodstone is an opaque dark-green form of chalcedony quartz with distinctive red spots.
Bloodstone Gemstone Information
Bloodstone Gemstone Information: Heliotrope value, gemological properties, crystal meanings; buying, identify & caring for bloodstone gems & jewelry: GemSelect
Blue Topaz Gems: Learn About Blue Topaz Gem...
Blue topaz is one of the most popular colored gemstones. There are many trade names for the different shades of blue, including Swiss blue, London blue and Sky bl...
Boleite is a rare silver-bearing mineral first discovered in Baja, Mexico. Some transparent specimens have been cut as gemstones
The botryoidal crystal habit is interesting both for its unique shape, and the fact that is commonly adopted by a number of quite different minerals
Boulder Opal Gemstone Information
Boulder Opal Information: Boulder Opal value, origin, gemological properties, crystal meanings. How to clean, identify boulder opal gems at GemSelect.
Calcite Gemstone Information
Calcite Gemstone Information: Calcite gem value, origin, gemological properties, crystal meanings. Learn how to clean, identify & buy calcite gems - GemSelect
Calcite, though somewhat soft, is popular with gem and mineral collectors for its luster and interesting colors
Carnelian Gemstone Information
Natural Carnelian Gemstone Information: Orange to red to brown Carnelian quartz gemstone value, gemological properties, crystal meanings. How to identify dyed car...
Cassiterite Natural Gemstone Information
Cassiterite Gemstone Information: Cassiterite value, gemological properties, crystal meanings. How to clean & identify cassiterite gems
Cat's Eye Apatite Gemstone Information
Cat's Eye Apatite Gemstone Information: Cat's Eye value, gemological properties, crystal meanings. How to clean & identify apatite gems - GemSelect
Cat's Eye Aquamarine Gemstone Information
Cat's Eye Aquamarine Gem Information: cat's eye aquamarine origin, sources and value. Read about the metaphysical power and gemological properties of cat's eye
Cat's Eye Diaspore Gemstone Information
Cat's Eye Diaspore Gemstone Information: Cat's Eye value, gemological properties, crystal meanings. How to clean & identify diaspore gems & jewelry: GemSelect
Cat's Eye Gemstones
The cat's eye effect is known as chatoyancy. It is common in a number of gem varieties and very rare in others.
Cat's Eye Moonstone Gemstone Information
Cat's Eye Moonstone Gemstone Information: Cat's Eye value, gemological properties, crystal meanings. How to clean & identify moonstone gems & jewelry: GemSelect
Cat's Eye Scapolite Gemstone Information
Cat's Eye Scapolite Gemstone Information: Cat's Eye value, gemological properties, crystal meanings. How to clean & identify scapolite gems & jewelry: GemSelect
Cat's Eye Tourmaline Gemstone Information
Cat's Eye Tourmaline Gemstone Information: Cat's eye value, gemological properties, crystal meanings. How to clean & identify tourmaline gems
Chalcedony Gemstone Information
Chalcedony Quartz Gemstone Information: Blue to lavender chalcedony is a variety of quartz with a waxy luster. Learn how to care and buy chalcedony gems
Chalcedony is used to refer to all types of cryptocrystalline quartz, but also to refer specifically to the blue or lavender variety.
Charoite Gemstone Information
Charoite Gemstone Information: Purple Violet Charoite value, gemological properties, crystal meanings. How to clean & identify charoite gems
Chinese Chicken's Blood Stone
Chicken's blood stone, also known as Changhua stone or Balinyouqi stone is a rock that has a bright red color. It is often carved into ornaments, such as seals.
Chocolate Opal Gemstone Information
Chocolate Opal Gemstone Information: Chocolate Opal value, gemological properties, crystal meanings. How to clean & identify opal gems
All the choices in rich green gemstones are expensive: emerald, tsavorite and chrome tourmaline. But chrome diopside is changing the market for fine green gems.
Chrome Diopside Gemstone Information
Chrome Diopside Gemstone Information: Chrome green, forest green diopside is similar in color to tsavorite garnet, emerald and chrome tourmaline. Learn about chro...
Chrome Tourmaline Gemstone Information
Chrome Tourmaline Gemstone Information: Chrome Tourmaline value, gemological properties, crystal meanings; buying, identify & caring for tourmaline gems
Chrysoberyl Cat's Eye Gemstone Information
Chrysoberyl Cat's Eye Gemstone Information: Cat's eye value, gemological properties, crystal meanings. How to clean & identify chrysoberyl gems
Chrysoberyl Gemstone Information
Chrysoberyl Gemstone & Jewelry Information: Chrysoberyl gemstones include cat's eye & color change alexandrite. Learn about value, gemological properties & crysta...
Chrysocolla is one of the copper-bearing gems, and is often found mixed with malachite, azurite, turquoise or quartz.
Chrysocolla Gemstone Information
Chrysocolla Gemstone Information: Chrysocolla gemstone value, gemological properties, crystal meanings. How to clean & identify Chrysocolla gems
Chrysolite was the name used in the ancient world for many gold and greenish-yellow gemstones, especially peridot, learn more about chrysolite gemstones
Chrysoprase Gemstone Information
Chrysoprase Gemstone Information: Chrysoprase gemstone value, gemological properties, crystal meanings. How to clean & identify Chrysoprase gems
Citrine Gemstone Information
Citrine Information: Citrine is November's birthstone and is popular for its yellow to golden orange color. Learn about natural citrine gemstones
Citrine is a gemstone famous for its positive energy, promoting success in business and relationships.
Clinohumite Gemstone Information
Clinohumite Gem and Mineral Info, learn about clinohumite gemstone sources, origin and gemological properties. Read about clinohumite's many metaphysical alternat...
Color Change Diaspore Gemstone Information
Color Change Diaspore Gemstone Information: Zultanite and Csarite are popular trade names for color change diaspore. Learn about diaspore origin, value, and more.
Color Change Sapphire Gemstone Information
Color Change Sapphire Gem Information, learn about color change sapphire gemstone gemology, sources, origin and value; metaphysical and healing powers of color ch...
Color-Change Garnet Gemstone Information
Color Change Garnet Gem Information, learn about color change garnet gemology, sources, origin, value; metaphysical and crystal healing properties of color change...
Conch Pearls, The Flamed Pink Queens
Conch pearls are extremely rare pearls that come from marine gastropods, like the queen conch, are often oval and pink with a porcelain-type luster or flamed pattern
Coral Gemstone Information
Precious Coral Gemstone Information: Coral gems are very rare & highly sought-after; learn about natural precious coral & agatized fossil coral sources, origin & ...
Cultured Pearl Info
Cultured pearls are produced by mollusks, helped along by humans. Both freshwater and saltwater species are produced
Danburite Gemstone Information
Danburite Gemstone Information, Learn about rare white danburite gemstones and gemology: sources, origin & value, and the metaphysical & crystal healing meanings ...
Danburite is a colorless to light pink, yellow or brown gemstone first discovered in Danbury, Connecticut
Demantoid Garnet Gems
Demantoid is the rarest and most valuable of all the garnets, and is one of the rarest of all colored gemstones.
Demantoid Garnet Gemstone Information
Demantoid Garnet Gem Information, learn about demantoid, the green andradite garnet: gemology, sources, origin, mythology, jewelry and how to care for demantoid g...
Dendritic agate is a whitish-gray or colorless chalcedony with fern-like markings known as dendrites.
Dendritic Agate Gemstone Information
Dendritic Agate Gem Information, learn all about dendritic agate gemstones, sources, origin and value. Read about the metaphysical and crystal healing powers of d...
Diamonds Gemstone Information
Diamond Gem Information: Learn about fancy color & white diamond gemstone value, sources & history. Read about metaphysical crystal healing & how to care for diam...
Dumortierite Quartz Gems
Quartz intergrown with the mineral dumortierite is a vivid blue or violet blue, and is often used as a gemstone or for carving
Dumortierite Quartz Gemstone Information
Dumortierite Quartz Gem Info: Learn about blue dumortierite quartz value, sources & properties. Learn metaphysical crystal healing & how to care for dumortierite ...
Emerald Gemstone Information
About natural emerald, the most precious beryl, and one of the rarest and most valuable of all gemstones. The green color of emerald is unparalleled.
Enstatite Gemstone Information
Learn about enstatite gemstones; history & origin, how to identify enstatite, gemological properties, related gems, enstatite mythology; how to care for enstatite...
Epidote Gemstone Information
Epidote Gemstone Info: Learn about epidote gems, epidote gemology, identification, origin, metaphysical properties & how to care for epidote gems.
Feldspar Gemstone Info
Feldspar is the most abundant mineral in the world, and includes gem varieties such as moonstone and andesine.
Fire Agate Gemstone Information
Fire Agate Gemstone Information: Learn about fire agate history, gemology & identifying; buying fire agate gems & about metaphysical crystal healing
Fire Opal Gemstone Information
Fire Opal is an unusual variety of opal with colors ranging from yellow to orange and orange-red. Like other opal, fire opal is hydrated silicon dioxide and are o...
Fluorite Gemstone Information
Fluorite Gemstone & Mineral Information: Learn About Fluorite Origin, Sources, Gemstone Value & Properties; Fluorite Varieties, Metaphysical Crystal Healing & Car...
Fluorite: The Collector's Stone
Fluorite is very popular with collectors, due to its wide range of colors. But fluorite also has some fascinating properties and some useful practical applications.
Fossil Coral Gemstone Information
Fossil Coral Gemstone Information: Learn about agatized fossil coral quartz gem sources, origin, value & gemological properties. Learn how to identify & buy fossi...
Garnet Gemstone Information
Garnet is a popular and affordable gemstone. Red garnet is the most well-known but green tsavorite & demantoid are the rarest and most valuable.
Gaspeite Gemstone Information
Gaspeite Gemstone & Mineral Information: About green gaspeite value, sources, gemological properties & metaphysical crystal healing meanings; Learn about gaspeite...
The names of many semi precious stones seem confusing and awkward. But accuracy of naming is extremely important in the gemstone industry.
Gemstone Type List: Guide to Precious & Sem...
List of precious & semi-precious gemstones: With over 130 gem varieties, our gemstone index will help you find the perfect colored stone for your jewelry & crysta...
Goshenite Gemstone Information
Goshenite Gemstone Information. About goshenite, a colorless white beryl: sources, value, gemological, crystal meanings, identifying, buying & caring for beryl gems.
Goshenite is the colorless form of beryl, often cut as a gemstone due to its excellent clarity and transparency
Grandidierite Gemstone Information
Grandidierite is one of the top 10 rarest gems, first discovered in 1902 by French mineralogist, Alfred Lacroix, then named in honor of Alfred Grandidier
Grossular Garnet: Grossular Garnet Gemstones
The grossularite garnet group includes grossular, hessonite, leuco, hydrogrossular and tsavorite.
Grossularite Garnet Gemstone Information
Grossularite Garnet Info: About green grossular gemstone value, sources, gemological properties; metaphysical crystal healing & meanings; buying & caring for gros...
Hackmanite Gemstone Information
Hackmanite gem and mineral info: Learn about hackmanite gemstone origin, value, sources and properties. Learn about hackmanite tenebrescence and its many metaphys...
Hackmanite exhibits an unusual phenomenon known as reversible photochromism, where a mineral changes color when exposed to sunlight
Hambergite Gemstone Information
Hambergite Gem and Mineral Info: Learn about hambergite gemstone origin, value, sources and properties. Learn about hambergite's metaphysical abilities
Hambergite is a nearly colorless gemstone with some distinctive properties, such as a very low density and a very high double refraction
Hawk's Eye Gemstone Information
Hawk's Eye Gemstone Information: Hawk's eye is a blue gray chatoyant variety of quartz, related to tiger's eye & pietersite. Learn about rare hawk's eye gems
Hematite and Pyrite
Hematite and Pyrite are among the only gemstones which exhibit a metallic luster.
Hematite Gemstone Information
Hematite Gemstone and Mineral Information: Learn about hematite gem origin, value, sources and properties. Learn about hematite's metaphysical abilities, and iden...
Hemimorphite Gemstone Information
Hemimorphite Gemstone, Mineral and Jewelry Information: Learn about hemimorphite gemstone origins, value, sources and metaphysical properties.
Hessonite Garnet Gemstone Information
Hessonite Garnet Gemstone Info: Learn about hessonite grossularite garnet gemstone origin, value, sources and properties. Learn about buying and identifying hesso...
Hiddenite Gemstone Information
Hiddenite is a form of spodumene containing chromium, but is rare and for the most part known only to collectors. The green color varies from a yellowish to a blu...
Hornblende and Gems
Hornblende is an important mineral in the gem industry. It is mostly famous for being an impurity found in gemstones such as anyolite, ruby-zoisite, moss opal and...
Howlite Gemstone Information
Learn about howlite gemstones; history and origin, how to identify and buy howlite, gemological properties, related gems, howlite mythology, jewelry ideas and car...
Idocrase Gemstone Information
Idocrase Gem and Mineral Info: Learn about idocrase gemstone origin, value, sources and properties. Learn about idocrase's metaphysical abilities
Idocrase Vesuvianite Gemstones
Idocrase is a rare gemstone, usually found in shades of green. Transparent specimens are very rare.
Imperial Topaz Gemstone Information
Learn about imperial topaz; history and origin, how to identify imperial topaz, gemmological properties, related gems, imperial topaz mythology, and how to care f...
Iolite Gemstone Information
Iolite Cordierite Gemstone Information: Learn about Iolite's unique color pleochroism: violet blue, yellow gray and light blue in the same stone.
Jacinth is a traditional name for orange or red zircon. Though no longer in use, it is part of the history of gemstones
Jade Gemstone Information
Learn about jade; jadeite and nephrite, history and origin, how to identify jade, gemmological properties, related gems, jade mythology and how to care for jade
Jadeite Gemstone Information
Jadeite Gemstone and Jewelry Information; Jade history and origin, how to identify jadeite, gemological properties, mythology, and caring for jadeite gems
Jasper Gemstone Information
Jasper is usually considered a chalcedony, but scientists put it in a group by itself because of its grainy structure. Learn all about Jasper here at GemSelect
Kornerupine Gemstone Information
Kornerupine, or prismatine, is a rare pleochroic collector's gemstone known to occur in variety of colors, including white, pink, yellow, brown, green and blue.
Kornerupine is a rare gemstone found in Greenland, Sri Lanka, Madagascar and Tanzania
Kunzite Gemstone Information
Pink Kunzite Gemstone Information: Learn about pink to violet spodumene kunzite history and origin, gemological properties, mythology and jewelry ideas
Kyanite Gemstone Information
Kyanite is a layered crystal with a luster that is vitreous to almost pearly, and is usually found in a sapphire-like blue.
Labradorite Gemstone Information
Learn about labradorite; history and origin, how to identify labradorite, gemological properties, related gems, labradorite mythology, jewelry ideas
Lapis Lazuli Gemstone Information
Information about lapis lazuli including variety, color, source, treatment, gemology, buyer's guide, buy lapis lazuli online at Gemselect
Lapis Lazuli: Stone of the Ancients
Lapis, the original blue gemstone of antiquity, has a long and romantic history. It has been mined continuously in Afghanistan for over 6,000 years.
Larimar Gemstone Information
Learn about Larimar; history and origin, how to identify Larimar, gemmological properties, related gems, Larimar mythology, jewellery ideas and how to care for La...
Lemon Quartz Gemstones
Lemon quartz is a trade name for transparent color-enhanced yellow quartz, sometimes called 'Oro Verde' and often confused with citrine quartz, read on to learn a...
Lepidolite Gemstone Information
Learn about lepidolite; history and origin, how to identify lepidolite, gemmological properties, related gems, lepidolite mythology, jewellery ideas and how to ca...
Malachite Gemstone Information
Learn about malachite; history and origin, how to identify malachite, gemmological properties, related gems, malachite mythology, and how to care for malachite
Malaya Garnet Gemstone Information
Malaya garnet is rare hybrid variety of garnet. It is mix pyrope-spessartine and almandite. It is also known under other trade name variations include malaia garn...
Mali Garnet Gemstone Information
Learn about Mali garnet; history and origin, how to identify Mali garnet, gemological properties, related gems, Mali garnet mythology, jewelry ideas and how to ca...
Mali Garnet Gemstones
Mali garnet is a mixture of grossular and andradite garnets. It was first discovered in the West African nation of Mali in 1994
Marcasite and Pyrite
Pyrite and marcasite have the same chemical composition, but different structures. Only one of them can be used as a gemstone
Maw-Sit-Sit from Burma
Maw-sit-sit is one of the more unusual gemstones in the world, from its curious name to its variable chemical composition.
Maw-Sit-Sit Gemstone Information
Learn about maw-sit-sit; history and origin, how to identify maw-sit-sit, gemological properties, related gems, maw-sit-sit mythology, and how to care for maw-sit...
Melanite Gemstone Information
Learn about melanite; history and origin, how to identify melanite, gemmological properties, related gems, melanite mythology, and how to care for melanite
Mexican Fire Opal
Fire opal is unique in the opal family because high grade material is transparent enough to be cut in facets.
Moldavite and Tektite
Moldavite is a green to brown form of natural glass resulting from meteorite impact. It is a rare mineral often used as a gemstone
Moldavite Gemstone Information
Learn about moldavite; history and origin, how to identify moldavite, gemmological properties, related gems, moldavite mythology, and how to care for moldavite
Moonstone is one of the most abundant and affordable of the gemstones with unique optical properties.
Moonstone Gemstone Information
Moonstone Gem Information: Moonstone sources, origin, gemological properties and value. Read about varieties and crystal powers of moonstone gems
Morganite Gemstone Information
Morganite Gemstone Information: Pink beryl history, origin, mythology and jewelry ideas. Identifying gemological properties & caring for morganite gems
Moss Opal Gemstone Information
Moss opal is a milky white opal with unique inclusions of green hornblende in moss-like patterns. Read more about moss opal in the GemSelect buyer's guide.
Mother of Pearl Gemstone Information
Mother-of-pearl is a gemstone formed by the nacreous inner shell coating of pearl-producing mollusks, it has an attractive pearly luster and beautiful iridescence
Mother-of-pearl is a gem made of the nacre that coats the inside of mollusk shells, its pearly luster and iridescence makes it ideal for jewelry use, such as cameos
Muscovite and Fuchsite
Muscovite is a mica that is found in many types of rocks. The green chromium-rich variety is known as fuchsite
Mystic Quartz Gemstone Information
Learn about mystic quartz and the high-tech film disposition enhancement applied to colorless quartz and topaz to created Mystic Gems and Azotic quartz and topaz ...
Mystic Topaz Gemstone Information
Mystic Topaz Gemstone Information: Mystic Topaz value, gemological properties, crystal meanings; buying, identify & caring for mystic gems
Carnelian, one of the oldest known gemstones, is a brownish red to red-orange variety of chalcedony or cryptocrystalline quartz.
Nephrite Jade Gemstone Information
Learn about nephrite jade; history and origin, how to identify nephrite jade, gemmological properties, related gems, nephrite jade mythology, and how to care for ...
Nuummite Gemstone Information
Learn about Nuummite; history and origin, how to identify Nuummite, gemmological properties, related gems, Nuummite mythology, and how to care for Nuummite
Obsidian Gemstone Information
Learn about obsidian; history and origin, how to identify obsidian, gemmological properties, related gems, obsidian mythology, and how to care for obsidian
Obsidian Volcanic Glass
Obsidian is the only natural gemstone which is actually glass, formed from lava that cools without crystal growth
Omphacite Jade Gemstone Information
Omphacite jade is a variety of jade that is composed of omphacite and jadeite. It is similar to other jade varieties such as jade-albite and maw-sit-sit
Onyx Gemstone Information
Learn about onyx; history and origin, how to identify onyx, gemmological properties, related gems, onyx mythology, jewellery ideas and how to care for onyx
Onyx Stone - Gemstones
Most people think of onyx as solid black. But onyx actually refers to layered stones that exhibit different colors in multiple layers.
Opal Gemstone Information
Opal Gemstone Information: Precious and common opal varieties, value, color, gemological properties; buyer's guide to buying loose opal and fine opal
Opal: Fire of the Desert
Australia has the largest opal deposits in the world, and the finest opals as well.
Orthoclase Gemstone Information
All about orthoclase, a transparent yellow feldspar resembling citrine quartz or yellow beryl, found primarily in Madagascar.
Paste is the term used to denote gemstones created from cut glass. The art of paste jewelry reached its peak in the 18th century
Pectolite Gemstone Information
Learn about pectolite; history and origin, how to identify pectolite, gemological properties, related gems, pectolite mythology, and how to care for pectolite
Peridot Gemstone Information
Peridot Gemstone Information: Peridot, sometimes referred to as olivine, is idiochromatic and as a result, is found only in green color.
Pietersite Gemstone Information
Pietersite Gemstone History; About Pietersite gemstone history, value and sources. Gemological properties, buying & identifying guide to pietersite gems
Pietersite is a breccia aggregate of hawks eye and tigers eye, with swirling colors of blue, rusty red, gold and brown
Prehnite Gemstone Information
Learn about prehnite; history and origin, how to identify prehnite, gemological properties, related gems, prehnite mythology, and how to care for prehnite
Prehnite was the first mineral named after an individual. New deposits of this intriguing gem are making it more widely available.
Pyrope Garnet Gemstone Information
Pyrope Garnet Information: Learn about the history of red garnet, gemological properties, value & sources for natural pyrope garnet; Buying & Caring for Pyrope Gems
Quartz Gemstone Information
Quartz Gemstone Information: Quartz is one of the most important gemstones in the world, and comes in many forms. Learn about Quartz Gemstones
Rainbow Moonstone Gemstone Information
Learn about rainbow moonstone; history and origin, how to identify rainbow moonstone, gemmological properties, related gems, rainbow moonstone mythology, jeweller...
Rainbow Pyrite Gemstone Information
Learn about rainbow pyrite; history and origin, how to identify rainbow pyrite, gemmological properties, related gems, rainbow pyrite mythology, jewellery ideas a...
Rainbow Scapolite Gemstones
Rainbow scapolite is a trade name for scapolite gems containing iridescent inclusions, these gems are often cut en cabochon and can display the full spectrum of c...
Rare Alexandrite Gems
Alexandrite, a color-change chrysoberyl, is one of the rarest of all colored gemstones.
Ammolite is the fossilized shell of ammonites, which are composed primarily of aragonite, the same mineral that makes up nacreous pearls
Rare Chrome Tourmaline
Chrome tourmaline is a distinct variety of tourmaline, colored by chromium and vanadium.
Rare Chrysoberyl Cat's Eye
Chrysoberyl cat's eye is a rare and exotic gemstone, combining excellent hardness with an especially vivid cat's eye effect.
Chrysoprase is considered the rarest and most valuable gemstone in the chalcedony quartz group.
Rare Fire Agate
One of the rarest forms of agate is the so-called fire agate, found only in the southwestern USA and Mexico.
Rare Garnets: Tsavorite, Spessartite and Rh...
The popular image of garnet is that of an inexpensive dark red gem. But there are some rarer varieties -- tsavorite, spessartite and rhodolite -- that have stunni...
Rare Sillimanite Gems
Sillimanite is a rare collector's gemstone that is colorless, grayish-white, green, bluish or brownish hues. Transparent, faceted sillimanite gems are extremely rare
Natural spinel is rare and can be difficult to find. The traditional source of the best spinel is Burma, but African spinel is starting to make the gem more avail...
Rare Tourmaline Gemstones: from Chrome to P...
Tourmaline is famous for its rainbow of colors, but some tourmaline are very rare. These include chrome tourmaline, paraiba tourmaline and watermelon tourmaline.
Cinnabar, a mercury sulphide that is usually a vivid red, has some unique gemological properties
Rhodochrosite is a manganese carbonate with an attractive soft pink color and interesting variegated markings.
Rhodochrosite Gemstone Information
Learn about rhodochrosite; history and origin, how to identify rhodochrosite, gemmological properties, related gems, rhodochrosite mythology, jewellery ideas and ...
Rhodolite Garnet Gemstone Information
Rhodolite Garnet Gemstone Information: Rhodolite is a Purplish Red Pyrope and Almandine garnet mix, often lighter in color than other red garnets. Rhodolite gems ...
Rhodonite Gemstone Information
Learn about rhodonite; history and origin, how to identify rhodonite, gemmological properties, related gems, rhodonite mythology, jewellery ideas and how to care ...
Rhodonite is a rose pink to red gemstone with black dendritic inclusions of manganese oxide
Rose Quartz Gemstone and Jewelry Informatio...
Pink Rose Quartz Information. Soft milky pink rose quartz is unique in the gems world. It is associated with love and healing. Read about Rose Quartz Gems & Jewel...
Rubellite is a pink to red variety of tourmaline, though there are different opinons about exactly what defines rubellite gems, some say it is red and others say ...
Ruby Gemstone Information
Read all about Ruby a red corundum. All other corundum colors are considered to be Sapphire. Corundum is the second hardest natural material. Learn about Ruby
Ruby in Fuchsite Information
Ruby-in-fuchsite is a colorful gemstone composed of ruby (corundum) and fuchsite, sometimes confused for ruby-in-zoisite because of its green and red contrasting ...
Ruby Zoisite Gemstone Information
All about ruby-zoisite, the natural combination of ruby and zoisite crystals in a single specimen.
The vast ruby deposits at Longido in Tanzania are the world's source for anyolite or ruby-zoisite.
Rutile topaz displays golden needle-like inclusions. But these are actually limonite, not rutile
Rutile Topaz Gemstone Information
Learn about rutile topaz; history and origin, how to identify rutile topaz, gemmological properties, related gems, rutile topaz mythology, jewellery ideas and how...
Sapphire Gemstone Information
Sapphire Gemstone Information: Sapphire has a Mohs hardness of 9. It is one of the hardest materials, second to diamond. Read about sapphire gems at Gemselect.
Sard and Sardonyx
Sard is a type of chalcedony quartz, similar to carnelian, but darker in color. Sardonyx is a type of banded agate with a brown base
Scapolite Gemstone Information
Scapolite gemstone information: Learn about scapolite sources, origin, gemmological properties and value. Read about the metaphysical crystal powers of scapolite ...
Scapolite is not well known, but makes an attractive gemstone. The cat's eye variety is rare and valuable.
Selenite Gemstones - Massive Crystals and C...
Selenite is a transparent and colorless form of crystalline gypsum. Some extraordinarily large crystals have been found in Mexico
Semi Precious Turquoise
Semi precious gems including turquoise have been mined, cut, worn and treasured by cultures all over the world for centuries
Seraphinite Gemstone Information
Learn about seraphinite; history and origin, how to identify seraphinite, gemmological properties, related gems, seraphinite mythology, jewellery ideas and how to...
Serpentine Gemstone Information
Learn about serpentine; history and origin, how to identify serpentine, gemmological properties, related gems, serpentine mythology, jewellery ideas and how to ca...
Sillimanite Gemstone Information
Sillimanite is an extremely rare collector's gem and polymorph of kyanite and andalusite, which is more often seen as cat's eye sillimanite than as faceted sillim...
Sillimanite is an aluminum silicate, related to both andalusite and kyanite. Cat's eye specimens make lovely rings.
Smithsonite Gemstone Information
Learn about smithsonite; history and origin, how to identify smithsonite, gemmological properties, related gems, smithsonite mythology, jewellery ideas and how to...
Smithsonite is one of two zinc-containing minerals discovered by the British mineralogist James Smithson. The other is hemimorphite
Smoky Quartz and Smoky Topaz: Learn About S...
Smoky quartz is sometimes sold under the misleading name of smoky topaz. Smoky topaz is not an official gemstone type because there is no such gemstone. Learn mor...
Sodalite Gemstone Information
Sodalite Gemstone and Jewelry Information; Learn about sodalite sources, gemological properties, mythology and more. Buying, cleaning and caring for Sodalite gems...
Spectrolite Labradorite Gemstones
Spectrolite is a rare variety of labradorite with an iridescence that displays a full spectrum of colors
Spessartite Garnet Gemstone Information
Spessartite Garnet Gemstone Information: When it comes to spessartine, Mandarin Garnet is the most valuable. Learn about spessartite garnet.
Sphalerite has fire or dispersion greater than diamond, but gem-quality specimens are rare.
Sphalerite Gemstone Information
Learn about sphalerite; history and origin, how to identify sphalerite, gemmological properties, related gems, sphalerite mythology, jewellery ideas and how to ca...
Sphene is one of very few gemstones with an adamantine or diamond-like luster. Sphene's dispersion or fire even exceeds diamond.
Sphene Gemstone Information
Sphene Gemstone Information:, Brilliant yellowish to golden green sphene exhibits high luster and intensive fire. Learn about Sphene gems and jewelry at GemSelect.
Spinel Gemstone Information
Spinel Gemstone Information: Spinel gems have excellent hardness, clarity and value. Spinel is one of the best jewelry gemstones. Learn about spinel gems and jewe...
Spodumene Gemstone Information
All about spodumene, a rock-forming mineral in granite and pegmatite that bears other lithium minerals.
Star Garnet Gems
Star garnet is one of the rarer gems exhibiting asterism, found only in Idaho and India.
Star sapphire and star ruby are examples of gems that exhibit asterism or the star effect. Learn why some gemstones exhbit this rare phenomenon.
Star Moonstone Gemstone Information
Star Moonstone Gem Information: Learn about star moonstone sources, origin, gemological properties and value. Read about the many metaphysical and crystal powers ...
Star Ruby Gemstone Information
All about Star Ruby, a ruby which displays asterism, a six-rayed star that shimmers over the surface of the stone when it is moved.
Star Sapphire Gemstone Information
All about Star Sapphire, a sapphire which contains unusual tiny needle-like inclusions. Aligned needles that intersect each other at varying angles produce a phen...
Quartz with red inclusions of iron oxide is rare, and is often sold under the name strawberry quartz or red fire quartz.
Sugilite Gemstone Information
Learn about sugilite; history and origin, how to identify sugilite, gemmological properties, related gems, sugilite mythology, jewellery ideas and how to care for...
Sunstone Gemstone Information
Learn about sunstone history and origin, how to identify sunstone, gemological properties, related gems, sunstone mythology, jewelry ideas and how to care for sun...
Sunstone: History of Sunstone, Feldspar Gem...
Sunstone, or aventurine feldspar, is a unique gemstone sought-after for its spangled appearance caused by hematite inclusions. Learn about popular sunstone gems a...
Tanzanite Gemstone Information
Tanzanite Gemstone Information: Tanzanite ranges in color from blue to purple. The best is a deep blue with purple shimmer. Learn about tanzanite gems & jewelry a...
How did tanzanite become so popular and so expensive? Is tanzanite good value at today's prices?
Tashmarine Diopside Gemstone Information
Tashmarine is the interesting trade name for a rare green diopside gemstone colored by iron. It is one the most important gemstone discoveries of the 21st century.
The Mystery of Andesine-Labradorite
An attractive red feldspar called andesine has attracted a lot of attention in the gems world. What is really known about andesine?
The World of Quartz Gemstones
Quartz is a very common mineral but the quartz family is incredibly diverse and endlessly fascinating.
Tiger's Eye Gemstone Information
Tiger's Eye Gemstone Information: Tiger's eye is an opaque, chatoyant quartz, closely related to hawk's eye and pietersite. Learn about tiger's eye quartz gems an...
Topaz Gemstone Information
Topaz Gemstone Information: Pink, Yellow, Precious Topaz; Mystic, Imperial Topaz and Blue Topaz are very important jewelry stones. Learn about topaz gems & jewelr...
Tourmaline Gemstone Information
Tourmaline Gemstone Information: Tourmaline is one of the most versatile gems, available from colorless to blue to black. Read more about fine tourmaline gems
Tsavorite Garnet Gemstone Information
Tsavorite Garnet Gemstone Information: Learn about green grossular Tsavorite garnet, found in only place in the world; Fine tsavorite gems and Jewelry: GemSelect
Turquoise Gemstone Information
Turquoise is one of the most popular green blue jewelry gemstones today. Natural turquoise is rare, but still affordable and highly sought-after for silver jewelr...
Andalusite has a such distinctive combination of colors and such pronounced pleochroism that it is rarely mistaken for any other gem.
Variscite Gemstone Information
Learn about variscite; history and origin, how to identify variscite, gemmological properties, related gems, variscite mythology, jewellery ideas and how to care ...
Variscite is a green phosphate mineral that is used as a gemstone and for carvings. Notable deposits are found in Utah
Verdite Gemstone Information
Verdite is a translucent to opaque collector's gem, typically light to dark green in color. As a member of the mica group, it is closely related to fuchsite.
What's Special about Chrysoberyl Gemstones?
Chrysoberyl is a rare gem with some outstanding characteristics, but it is so little known that even many gem dealers don't stock it.
What's Special about Spessartite?
Spessartite is no ordinary garnet. With its striking mandarin orange color and its high refractive index, it is one of the finest gems in today's market.
Zircon Gemstones Information
Zircon Gemstone Information: Zircon has great brilliance and intensive fire, due to its refractive index and dispersion. Read more about natural zircon gems.
Zircon Stone - Excellent Gemstones
Zircon is an important jewelry stone, recognized for its exceptional brilliance and fire.
Zoisite was first discovered in Austria in 1805. Three gemstone varieties are known: tanzanite, thulite and anyolite (or ruby-zoisite).
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