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Gemstones A-Z

Actinolite Cat's Eye 77 Agate 1,399 Agate Geode 58 Almandine Garnet 85 Amazonite 402 Amethyst 3,508 Ametrine 370 Ammolite 393 Andalusite 253 Andesine Labradorite 195 Apatite 810 Aquamarine 293 Aventurine 85 Beryl 19 Black Opal 303 Bloodstone 95 Boulder Opal 137 Calcite 1 Carnelian 349 Cat's Eye Apatite 87 Cat's Eye Aquamarine 31 Cat's Eye Augite 4 Cat's Eye Gemstones 1,169 Cat's Eye Moonstone 364 Cat's Eye Opal 70 Cat's Eye Scapolite 201 Chalcedony 259 Charoite 228 Chocolate Opal 50 Chrome Diopside 125 Chrysoberyl 187 Chrysocolla 35 Chrysoprase 120 Citrine 4,594 Color Change Gemstones 1,226 Color-Change Diaspore 991 Color-Change Fluorite 84 Color-Change Garnet 121 Color-Change Sapphire 20 Coral 726 Demantoid Garnet 349 Dendritic Agate 3 Diamond 293 Druzy Amethyst 16 Druzy Azurite 40 Emerald 301 Enstatite 5 Fire Agate 251 Fire Opal 276 Fluorite 175 Fossil Coral 317 Garnet 6,937 Golden Beryl 19 Grandidierite 178 Grossularite Garnet 81 Hawk's Eye 5 Hematite 456 Hemimorphite Druzy 58 Hessonite Garnet 1,759 Hiddenite 14 Howlite 42 Hyalite Opal 10 Idocrase 11 Imperial Topaz 16 Iolite 190 Jade Gemstones 513 Jadeite 513 Jasper 1,186 Kornerupine 211 Kunzite 185 Kyanite 276 Labradorite 144 Lapis Lazuli 413 Larimar 179 Malachite 228 Malaya Garnet 315 Mali Garnet 41 Maw-Sit-Sit 162 Moonstone 1,554 Morganite 626 Moss Opal 1 Mother of Pearl 124 Mystic Topaz 374 Nuummite 40 Obsidian 184 Opal 2,176 Opal Doublet 253 Opal in Matrix 42 Pearl 88 Peridot 1,440 Pietersite 185 Prehnite 1,082 Pyrite 51 Pyrope Garnet 2,517 Quartz 5,700 Quartz Cat's Eye 167 Quartz With Marcasite 187 Rainbow Moonstone 243 Rainbow Pyrite 1 Rhodochrosite 271 Rhodolite Garnet 915 Rose Quartz 1,094 Rubellite Tourmaline 72 Ruby 1,378 Ruby in Fuchsite 106 Ruby-Zoisite 164 Rutile Quartz 946 Sapphire 9,343 Scapolite 201 Scolecite 53 Seraphinite 140 Serpentine 7 Sillimanite 427 Sillimanite Cat's Eye 319 Smithsonite 1 Smoky Quartz 1,216 Snowflake Obsidian 23 Sodalite 25 Spectrolite 35 Spessartite Garnet 355 Sphalerite 1 Sphene 256 Spinel 1,131 Star Diopside 147 Star Garnet 73 Star Gemstones 1,300 Star Lemon Quartz 1 Star Moonstone 214 Star Rose Quartz 44 Star Ruby 261 Star Sapphire 552 Star Sunstone 8 Strawberry Quartz 903 Sugilite 4 Sunstone 610 Tanzanite 866 Tiger's Eye 292 Tiger's Eye Matrix 29 Topaz 6,017 Tourmaline 2,318 Tsavorite Garnet 326 Turquoise 35 Variscite 32 Zircon 2,670

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Shop Star Gemstones — Browse through our fine assortment of Natural Star Gemstones. These gems all possess and display an exquisite star reflection.

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Total Number of Articles: 1360

Gemstone Information A-Z

The largest selection of gemstone articles online...

256 Articles

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See an extensive selection of articles about birthstones

12 Articles

History of Gemstones

Fascinating details of ancient gemstones facts and stories

145 Articles

Healing Gemstones

Learn about the healing effects of different gemstones

51 Articles

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151 Articles

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50 Articles

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106 Articles

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367 Articles

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Popular Gemstones

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Emerald
Ruby
Aquamarine
Zircon
Opal
Topaz
Tourmaline
Garnet
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Tanzanite

All Gemstones (144)

A B C D E F G H I J K L M N O P Q R S T V Z

Actinolite Cat's Eye
Agate
Agate Geode
Almandine Garnet
Amazonite
Amethyst
Ametrine
Ammolite
Andalusite
Andesine Labradorite
Apatite
Aquamarine
Aventurine

Beryl
Black Opal
Bloodstone
Boulder Opal

Calcite
Carnelian
Cat's Eye Apatite
Cat's Eye Aquamarine
Cat's Eye Augite
Cat's Eye Gemstones
Cat's Eye Moonstone
Cat's Eye Opal
Cat's Eye Scapolite
Chalcedony
Charoite
Chocolate Opal
Chrome Diopside
Chrysoberyl
Chrysocolla
Chrysoprase
Citrine
Color Change Gemstones
Color-Change Diaspore
Color-Change Fluorite
Color-Change Garnet
Color-Change Sapphire
Coral

Demantoid Garnet
Dendritic Agate
Diamond
Druzy Amethyst
Druzy Azurite

Emerald
Enstatite

Fire Agate
Fire Opal
Fluorite
Fossil Coral

Garnet
Golden Beryl
Grandidierite
Grossularite Garnet

Hawk's Eye
Hematite
Hemimorphite Druzy
Hessonite Garnet
Hiddenite
Howlite
Hyalite Opal

Idocrase
Imperial Topaz
Iolite

Jade Gemstones
Jadeite
Jasper

Kornerupine
Kunzite
Kyanite

Labradorite
Lapis Lazuli
Larimar

Malachite
Malaya Garnet
Mali Garnet
Maw-Sit-Sit
Moonstone
Morganite
Moss Opal
Mother of Pearl
Mystic Topaz

Nuummite

Obsidian
Opal
Opal Doublet
Opal in Matrix

Pearl
Peridot
Pietersite
Prehnite
Pyrite
Pyrope Garnet

Quartz
Quartz Cat's Eye
Quartz With Marcasite

Rainbow Moonstone
Rainbow Pyrite
Rhodochrosite
Rhodolite Garnet
Rose Quartz
Rubellite Tourmaline
Ruby
Ruby in Fuchsite
Ruby-Zoisite
Rutile Quartz

Sapphire
Scapolite
Scolecite
Seraphinite
Serpentine
Sillimanite
Sillimanite Cat's Eye
Smithsonite
Smoky Quartz
Snowflake Obsidian
Sodalite
Spectrolite
Spessartite Garnet
Sphalerite
Sphene
Spinel
Star Diopside
Star Garnet
Star Gemstones
Star Lemon Quartz
Star Moonstone
Star Rose Quartz
Star Ruby
Star Sapphire
Star Sunstone
Strawberry Quartz
Sugilite
Sunstone

Tanzanite
Tiger's Eye
Tiger's Eye Matrix
Topaz
Tourmaline
Tsavorite Garnet
Turquoise

Variscite

Zircon

Main Categories

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Unheated Sapphire

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International:
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart