Tiger's Eye
Quartz var. Tiger's Eye · Semi-Precious Gemstone and Decorative Stone
Crystal System
Trigonal, massive to fibrous habit, shaped into a manufactured hexagonal pendant crystal point
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2
Formation Process
Pseudomorphic replacement process where silica (quartz) replaces original fibrous crocidolite (blue asbestos) while retaining the fibrous structure
About This Crystal
A polished hexagonal pendant carved and faceted into a crystal point shape, displaying a golden-brown to yellow-brown color with characteristic silky chatoyant bands and parallel fibrous streaks running lengthwise.
Physical Characteristics
Gold-brown to brownish-yellow body color, white streak, fibrous habit, distinct conchoidal fracture, no true cleavage, specific gravity of around 2.64 to 2.71, brittle tenacity, silky to vitreous luster when polished
Optical Properties
Refractive index of 1.544 to 1.553, doubly refractive, displays a strong chatoyant effect (cat's eye effect) due to the parallel alignment of microscopic quartz fibers
Hardness & Durability
Origin Region
South Africa, Western Australia, USA, Canada, Brazil, and India; typically forms in metamorphic environments
Hardness & Durability
Mohs hardness of 7, good durability and toughness, suitable for daily wear in jewelry like pendants and rings, stable against normal light and heat conditions
Care & Maintenance
Clean with warm soapy water and a soft cloth, avoid harsh chemical cleaners and ultrasonic cleaners, store away from harder gemstones to prevent scratching
Rarity & Value
Common mineral variety widely available, affordable price range for manufactured jewelry, enhancements like heat treatment or dyeing are sometimes used to alter color tones
Special Characteristics
Pronounced chatoyancy (optical phenomenon creating a moving band of reflected light resembling a cat's eye) resulting from pseudomorphic replacement of fibrous riebeckite
Lore & History
Historically used as a protective amulet against curses and ill wishes by ancient cultures like the Romans and Egyptians; associated with courage, grounding, and the solar plexus chakra in modern metaphysical practices