THE MATERIAL LIBRARY
Crazy Horse Stone
A supplier trade name for calcite-rich ornamental material.
Colors & patterns
Brown, gray, tan, mauve and pink combinations.
Typical origins
The trade name alone does not establish a specific quarry or country; obtain the supplier's origin information.
Hardness
About 3 for calcite
Choosing & setting this material
Earthy patches make distinctive pendants. It is softer than jasper and sensitive to acids, so choose protected settings and avoid abrasive wear.
Care & cleaning
Wipe gently with a soft, slightly damp cloth and dry promptly. Avoid soaking, acids, solvents, steam and ultrasonic cleaning. Store separately to protect the surface.
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