Historical knowledge about Jade...
About Jade

Genuine jade or “Yu”, as it is called in China, is strictly speaking a generic term for two different gems: jadeite or nephrite...
How Jade Differs

In general, the value of jade is determined by five standards: Color, Tone, Translucency, Texture and Cutting...
How to Identify Jade Quality

There are five steps to take jade from a raw stone and turn it into a finished product...
Jade Manufacturing & Processing