THE MATERIAL LIBRARY
Tigereye
A chatoyant quartz-rich material also called tiger's eye.
Colors & patterns
Golden yellow to brown with a silky moving band of light; blue varieties also occur.
Typical origins
South Africa is an important source; material also occurs in Australia and other regions.
Hardness
About 6.5–7
Choosing & setting this material
Correct cutting orientation produces the moving eye. Red and other colors may be treated, so ask about heating or dyeing.
Care & cleaning
Clean gently with lukewarm water, a little mild soap and a soft cloth, then dry. Avoid steam, ultrasonic cleaners, harsh chemicals and sudden temperature changes, especially when treatments are unknown.
Origins above describe typical sources of the material, not the origin of an illustrated or stocked stone. Hardness measures scratch resistance, not resistance to breaking. Confirm the identity and treatments of the actual piece.
Further reading: Material reference · GIA: gem treatments