Global Gemology - Rare Gems & Jewels
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GEM ENCYCLOPEDIA

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Below is an alphabetized list of over 100 different gems.

Click on a gem for additional photos, facts, and other interesting information about each gemstone.
Diamond
Click here for photos, facts, and other information about diamonds
Emerald
Click here for photos, facts, and other information about emeralds
Ruby
Click here for photos, facts, and other information about rubies
Sapphire
Click here for photos, facts, and other information about sapphires
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A


  • Abalone Shell
  • Agate
  • Akoya Pearl
  • Alexandrite
  • Almandine
  • Amazonite
  • Amber
  • Amethyst
  • Ametrine
  • Ammolite
  • Andalusite
  • Angelskin Coral
  • Apatite
  • Aquamarine
  • Aventurine
  • Azurite
  • Azurmalachite​

B


  • Beryl
  • Bloodstone
  • Blue Topaz
  • Bone

c


  • Carnelian
  • ​Cat's Eye Chrysoberyl
  • Cat's Eye Tourmaline
  • Chalcedony
  • ​Charoite
  • Chrome Tourmaline
  • Chrysoberyl
  • Chrysocolla
  • Chrysoprase
  • Citrine
  • Color Change Sapphire
  • Conch Pearl
  • Coral
  • Cubic Zirconia

d


  • Demantoid
  • Dendritic Quartz
  • Diamond
  • Diopside

e


  • Emerald

f


  • Fancy Color Diamond
  • Fire Agate
  • Fire Opal

g


  • Garnet
  • ​Gaspeite
  • Glass​
  • Goldstone

h


  • Heliodor
  • ​Heliotrope
  • Hematine
  • ​Hessonite
  • Horn
  • Howlite
  • Hydrogrossular

i


  • Iolite
  • Ivory

j


  • Jade
  • Jadeite
  • Jasper
  • Jet

k


  • Keshi Pearl
  • Kunzite

l


  • Labradorite
  • Lapis Lazuli

m


  • Malachite
  • Marcasite
  • Melo Melo Pearl
  • Moissanite
  • Moldavite
  • Moonstone
  • ​Morganite
  • Moss Agate
  • Mother of Pearl

n


  • Nephrite

o


  • Obsidian
  • Onyx
  • Opal

p


  • Padparadscha Sapphire
  • Paraìba Tourmaline
  • Pearl
  • Peridot
  • Plastic
  • Prasiolite
  • Pyrite
  • Pyrope

q

  • Quahog Pearl
  • ​Quartz

r


  • Red Coral
  • Rhodochrosite
  • Rhodolite
  • Rhodonite
  • Rock Crystal
  • Rose Quartz
  • Rubellite
  • Ruby
  • Rutilated Quartz

s


  • Sapphire
  • Sard
  • Sardonyx
  • Serpentine
  • Shell
  • Smoky Quartz
  • Sodalite
  • South Sea Pearl
  • Spessartine
  • Spinel​
  • Star Diopside
  • Star Sapphire
  • Sunstone

t


  • Tahitian Pearl
  • Tanzanite
  • Tiger's Eye
  • Topaz
  • Tortoise Shell
  • Tourmaline
  • ​Tourmalinated Quartz
  • Trapiche Emerald
  • ​Trapiche Ruby
  • Tridacna Pearl
  • ​Tsavorite
  • Turquoise

u


  • Uvarovite

v


  • Variscite

w


  • Watermelon Tourmaline

x


y


z


  • ​Zircon
  • ​Zoisite
  • HOME
  • ABOUT
  • SHOP
  • SERVICES
    • APPRAISALS
    • EXPERT WITNESS TESTIMONY
    • SELL YOUR JEWELRY
  • GEMOLOGY
    • GEM ENCYCLOPEDIA
    • THE ART OF GEMOLOGY
  • JEWELRY EDUCATION
    • DIAMOND FACTS
    • JEWELER DIRECTORY
    • JEWELRY PERIODS
    • POCKET WATCHES
    • NATIVE AMERICAN JEWELRY
  • GLOSSARY