Tiger’s Eye Value, Price, and Jewelry Information


tiger's eye - South Africa
Tiger's Eye (Quartz): South Africa (rough mass ~ 3 inches long; blue and red cabochons are dyed). Photo © Joel E. Arem, PhD, FGA. Used with permission.

Tiger's Eye Value

The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.

Tiger's Eye Information

DataValue
NameTiger's Eye
Is a Variety ofQuartz
VarietiesFalcon's Eye
Crystallography Hexagonal.
Refractive Index 1.544-1.553
Colors Golden brown (Tiger's eye); Blue (Hawk's eye); some pieces show both colors.
Fracture Conchoidal
Hardness 7
Birefringence 0.009
Cleavage None
Dispersion 0.013
Wearability Very Good
Absorption Spectrum Not diagnostic.
Optics = 1.544; = 1.553 (very constant). Uniaxial (+).

Crocidolite, (blue asbestos,) alters to quartz, but while retaining its fibrous structure. This material is frequently stained by iron, giving it a golden brown color. We know this material as tigers eye. Unstained pieces, retaining their original blue color, are called Hawk’s Eye. There are also pieces with both colors.