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wholesale sterling silver beach jewelry Identification of Syphier's authenticity method:
1. View mark
national standards stipulates that precious metal jewelry should be produced, manufacturers, materials and content marks, and unqualified products are unqualified products. If a quality problem, quality inspection agencies may be given inspection and judgment according to the mark.
2. Sensory inspection method:
The color: Foot gold is dark yellow, K gold has yellow, red, white and other colors, and most of the imitation gold products are copper alloy with lighter colors.
： weight: The proportion of gold is 19.3g/cm3, which is much higher than the proportion of imitation gold products. For example, a foot gold ring is about 5 grams, and the same size imitation gold products are generally less than 3 grams.
The test hardness: pure gold is soft, scratches with large head needles, bite tooth marks with teeth.
united states jewelry wholesalers 1. Look at the product printing, and there is "Syphier's AU 999.9"
2. Sweep the QR code
3. Enter the product detection number to query product information