After inspection by the quality inspection department, it is stipulated that the label standards of Huangbao are: white, black and purple: cubic zirconia red synthesized by thousands of gold: ruby blue synthesized by thousands of gold: sapphire starlight synthesized by thousands of gold: sapphire green synthesized by thousands of gold: jade (processed) with auxiliary stones, and the other side of the label must be marked with cubic zirconia diamond: palladium 950/ platinum 950/ gold 750 diamond (ring, necklace ... Necklace) White metal inlaid in colored gems is generally natural, but you must see the appraisal certificate. The following are natural gemstone labels: blue sapphire: palladium 950/ platinum 950/ gold 750 sapphire (ring, necklace ...) ruby: palladium 950/ platinum 950/ gold 750 ruby (ring, necklace ...). Ten thousand gold: thousands of gold (ring and necklace) gold: thousands of gold (ring and necklace) platinum: ...