Quartz · Quartz

Tiger's Eye Quartz

Tiger's-eye is chatoyant quartz formed when silica locked around crocidolite asbestos fibres, stained golden by iron oxide. South African material supplies the world with this affordable, silky, ever-popular cabochon stone.

Colour
brown

Transparency
Opaque

RI
1.544–1.553

SG
2.64–2.71

Mohs
7.0

Birthstone
February · November

🔒 Full JDMIS reference record

Sign in to unlock price ranges by tier, common misidentifications, diagnostic inclusions, treatments, spectra, trade names and sources — free with the GT200 Gem Identification course.

GT200 Gem Identification ↗ Sign in

Browse the free gem reference · Test your eye — the Great Gem Quiz · Singapore gem testing labs

Tiger's Eye Quartz

Related gems