A free gemology reference site
Gemology, gemstones, minerals and more

The Gemstones

How do you identify gemstones? Here we provide free information and reference material regarding how to identify gemstones. The Gemstones Section is sponsored by the International School of Gemology, and will be presented in three stages. First for Consumer Information to answer some of the frequently asked questions about the various gemstones. Then General Information for anyone wanting to know more technical information about the gemstone. And then the Gemological Information for gemologists is available through the International School of Gemology. To learn more about gemstone identification and grading visit the International School of Gemology.

Amber

Amethyst

Amazonite

Ammolite

Andalusite

Apatite

Azurite

Aquamarine

Axinite

Benitoite

Chrysoprase

Caymanite

Charoite

Chrysoberyl

Cinnabar

Citrine

Conch Pearl

Danburite

Diamond

Dioptase

Diopside

Emerald

Fire Agate

Gaspeite

Garnet

Golden Beryl

Iolite

Idocrase

Jade Nephrite

Jadeite

Kornerupine

Kunzite

Kyanite

Lapis Lazuli

Labradorite

Larimar

Malachite

Maws Sit Sit

Morganite

Moldavite

Opal

Pearls

Peridot

Petalite

Prehnite

Red Emerald

Rhodochrosite

Ruby

Sapphire

Scapolite

Seraphinite

Serpentine

Shell

Sinhalite

Sphene

Spinel

Sugilite

Sunstone

Tanzanite

Topaz

Tourmaline

Turquoise

Zircon