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Gemstones A-Z

Actinolite Cat's Eye 71 Agate 1,191 Agate Geode 41 Almandine Garnet 71 Amazonite 323 Amethyst 3,188 Ametrine 321 Ammolite 415 Andalusite 241 Andesine Labradorite 181 Apatite 731 Aquamarine 198 Aventurine 89 Beryl 350 Black Opal 226 Bloodstone 57 Boulder Opal 94 Calcite 1 Carnelian 278 Cat's Eye Apatite 63 Cat's Eye Aquamarine 22 Cat's Eye Gemstones 1,035 Cat's Eye Moonstone 293 Cat's Eye Opal 63 Cat's Eye Scapolite 175 Chalcedony 229 Charoite 179 Chocolate Opal 42 Chrome Diopside 72 Chrysoberyl 163 Chrysocolla 19 Chrysoprase 69 Citrine 4,363 Clinohumite 1 Color Change Gemstones 1,155 Color-Change Diaspore 959 Color-Change Fluorite 81 Color-Change Garnet 95 Color-Change Sapphire 12 Coral 723 Demantoid Garnet 325 Dendritic Agate 2 Diamond 256 Druzy Amethyst 11 Druzy Azurite 30 Emerald 262 Enstatite 5 Fire Agate 263 Fire Opal 287 Fluorite 144 Fossil Coral 352 Garnet 6,321 Golden Beryl 350 Grandidierite 221 Grossularite Garnet 62 Hawk's Eye 3 Hematite 434 Hemimorphite Druzy 54 Hessonite Garnet 1,771 Howlite 36 Hyalite Opal 8 Idocrase 11 Imperial Topaz 11 Iolite 96 Jade Gemstones 450 Jadeite 450 Jasper 1,217 Kornerupine 211 Kunzite 142 Kyanite 360 Labradorite 204 Lapis Lazuli 303 Larimar 153 Malachite 152 Malaya Garnet 267 Mali Garnet 35 Maw-Sit-Sit 151 Moonstone 1,396 Morganite 704 Mother of Pearl 117 Mystic Topaz 274 Nuummite 37 Obsidian 222 Onyx 2 Opal 1,782 Opal Doublet 151 Opal in Matrix 32 Pearl 65 Peridot 1,284 Pietersite 235 Prehnite 1,018 Pyrite 38 Pyrope Garnet 2,292 Quartz 5,581 Quartz Cat's Eye 146 Quartz With Marcasite 187 Rainbow Moonstone 243 Rainbow Pyrite 1 Rhodochrosite 238 Rhodolite Garnet 754 Rose Quartz 1,034 Rubellite Tourmaline 49 Ruby 1,213 Ruby in Fuchsite 103 Ruby-Zoisite 155 Rutile Quartz 828 Sapphire 8,327 Scapolite 175 Scolecite 47 Seraphinite 112 Serpentine 5 Sillimanite 434 Sillimanite Cat's Eye 336 Smithsonite 1 Snowflake Obsidian 20 Sodalite 12 Spectrolite 24 Spessartite Garnet 328 Sphalerite 1 Sphene 248 Spinel 1,099 Star Diopside 89 Star Garnet 31 Star Gemstones 1,042 Star Lemon Quartz 1 Star Moonstone 178 Star Rose Quartz 48 Star Ruby 235 Star Sapphire 458 Star Sunstone 2 Strawberry Quartz 889 Sunstone 588 Tanzanite 779 Tiger's Eye 255 Tiger's Eye Matrix 23 Topaz 5,179 Tourmaline 2,068 Tsavorite Garnet 290 Turquoise 40 Variscite 19 Zircon 2,648

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Total Number of Articles: 1732

Gemstone Information A-Z

The largest selection of gemstone articles online...

269 Articles

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12 Articles

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Fascinating details of ancient gemstones facts and stories

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154 Articles

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56 Articles

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109 Articles

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381 Articles

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Articles on the cutting styles that turn rough unpolished...

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145 Articles

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Aquamarine
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All Gemstones (141)

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 Gemstones
Cat's Eye Moonstone
Cat's Eye Opal
Cat's Eye Scapolite
Chalcedony
Charoite
Chocolate Opal
Chrome Diopside
Chrysoberyl
Chrysocolla
Chrysoprase
Citrine
Clinohumite
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
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
Mother of Pearl
Mystic Topaz

Nuummite

Obsidian
Onyx
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
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
Sunstone

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

Variscite

Zircon

Main Categories

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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