1. Jewelry and jade should be made of natural materials, artificial gemstones are not allowed, and comply with the regulations on natural jewelry and jade in GB/T16552. 2. Precious metals gold and silver should be made of pure gold or pure silver, and the purity of the corresponding precious metals should not be less than 990‰. 3. The wire inlay is uniform, the layout is reasonable, the shape is complete, the lines are clear, and the image is lifelike; it is closely integrated with the jade interface, connected naturally, and has clear layers, without defects such as skipping wires, misalignment, displacement, slag inclusions, cracks, collapse, looseness, etc. 4. When quality is used as the basis for settlement, the product quality measurement tolerance is ±0.01g.
T/SZGM 001-2020 history
2020T/SZGM 001-2020 Gold and silver inlaid silk products (jewelry and jade)