The determination of the scope of terms mainly selects related terms commonly used in jewelry and jade identification.
Jewelry and jade is a special commodity, and the selection of identification method is based on the principle of not destroying the sample. Except hardness test, other methods are basically nondestructive appraisal methods. Hardness is one of the basic characteristics of jewelry and jade, which is slightly damaged during identification. Although it can't be used as an important identification item, it can still be used as an auxiliary means for comparing raw stones.
The jewelry and jade varieties listed in the appraisal standard include ordinary and relatively ordinary varieties and some rare jewelry and jade varieties.