Yunnan Provincial Standard of the People's Republic of China
Latest
DB53/T 102-2002
Scope
This standard specifies the quality grading principles for jade jewelry (including inlaid and inlaid jade jewelry). This standard is applicable to the quality inspection, value assessment, commercial trade, capital mortgage, pawn, auction, etc. of jade jewelry within the administrative jurisdiction of Yunnan Province and can be implemented as a reference. This standard does not apply to the grading of artificially "processed" jade jewelry, nor to jade raw materials and unpolished jade jewelry.