Tiger's Eye
Quartz var. Tiger's Eye · Semi-Precious Gemstone / Ornamental Stone
Crystal System
Trigonal, massive to fibrous habit
Mineral Group
Silicates
Chemical Formula
SiO2
Formation Process
Pseudomorphic replacement of crocidolite (blue asbestos) by silica under low-temperature hydrothermal conditions
About This Crystal
A polished, tumbled stone showing golden-brown and dark brown color banding with a silky luster and distinct chatoyant sheen.
Physical Characteristics
Color: golden brown, yellow, brown, dark brown; Streak: white; Cleavage: none; Fracture: conchoidal to uneven; Specific Gravity: 2.64-2.71; Tenacity: brittle; Fluorescence: inert
Optical Properties
Uniaxial positive, chatoyancy (cat's-eye effect) due to parallel fibrous structure, doubly refractive
Hardness & Durability
Origin Region
South Africa, Western Australia, USA, Canada, Brazil, India
Hardness & Durability
Mohs hardness 7, good toughness, durable for most jewelry applications
Care & Maintenance
Clean with warm soapy water and a soft cloth, avoid harsh chemicals and prolonged direct sunlight
Rarity & Value
Common, affordable, value depends on chatoyancy strength and color richness, untreated
Special Characteristics
Chatoyancy, silky fiber-optic reflections, pseudomorphic structure
Lore & History
Historically used as an amulet against curses and ill-wishes, associated with courage, strength, and grounding, linked to the Solar Plexus chakra