2. Jade Identification and Trade Course Hetian Jade Identification and Trade Course Quartzite Jade Identification and Trade Course Carbonate Jade Identification and Trade Course Xiuyu Jade Identification and Trade Course dushan jade Identification and Trade Course, etc.

3. Jade, also known as jadeite, jadeite and Burmese jade, is a kind of jade. The correct definition of jadeite is fibrous aggregate composed of pyroxene minerals, mainly jadeite minerals. But jade is not equal to jade. Jadeite is a kind of stone polycrystalline aggregate that reaches the jade level under geological action. It is mainly composed of jadeite or jadeite, sodium (sodalite) and sodalite (omphacite), and may contain amphibole, feldspar, chromite and limonite.