THE MATERIAL LIBRARY
Serpentine
A group of minerals and related rocks, sometimes sold as new jade.
Colors & patterns
Green, yellow-green, cream or dark mottled tones.
Typical origins
Occurs worldwide, including China, the United States and New Zealand.
Hardness
Variable; commonly about 2.5–5.5
Choosing & setting this material
It is not jadeite or nephrite. Trade material varies widely, so confirm identity and suitability before cutting or setting; softer examples need extra protection.
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