Gemstone Encyclopedia
Complete Guide and Detailed Information for Any Gemstone You Love
Color
Wearability
Location
Birthstone
Hardness
1.0 — 10.0
Onyx
Onyx is a striking variety of chalcedony known for its parallel banded layers, most famously prized in its deep, lustrous black form.
Dioptase
A rare copper silicate mineral celebrated for its intense, emerald-like saturation, Dioptase is a prized collector’s gem that balances breathtaking visual brilliance with a delicate, fragile structure.
Bismutotantalite
Bismutotantalite is an exceptionally rare, amber-to-brown collector’s gemstone in the tantalite group, prized for its scarcity but considered too fragile for jewelry due to its low hardness and distinct cleavage.
Moonstone
Moonstone is a captivating gemstone celebrated for its “adularescence,” a soft, ethereal glow that dances across its surface like moonlight on water.
Grossular Garnet
Grossular garnet is a versatile calcium-aluminum species of the garnet group, celebrated in gemology for its diverse color palette ranging from the vivid green of Tsavorite to the warm, honey-toned “cinnamon stone” known as Hessonite.
Celestite
Celestite is a delicate strontium sulfate mineral prized for its ethereal pale-blue color and its association with mental clarity and spiritual tranquility.
Friedelite
Friedelite is a rare manganese silicate mineral, typically found in hydrothermal veins, characterized by its distinctive rose-red to brownish-orange crystals and complex sheet-silicate structure.
Amazonite
Amazonite is a vibrant blue-green variety of microcline feldspar. Found primarily in granitic pegmatites, it is distinguished by its unique “grid-like” perthitic texture and a color derived from trace lead impurities.
Actinolite
Actinolite is a striking green amphibole mineral prized by collectors for its radiating needle-like crystals and its rare, chatoyant “cat’s eye” gemstone variety.
Amethyst
Amethyst is a stunning purple variety of quartz, celebrated as the February birthstone, that ranges from soft lavender to deep royal violet.
Garnet
Garnet is a diverse group of silicate minerals renowned for their rich red hues, exceptional brilliance, and durability, serving as the traditional birthstone for January.