The goods are genuine, because your certificate is genuine. Gold 750 is 0.328 cent, the color is white, and the weight of gold is 2.87. The price you bought is absolutely cheap, because some colors are written in letters and letters, but white is good enough. You lack purity, so you didn't write a certificate. Purity can be seen under a magnifying glass, but not with the naked eye when wearing a ring. If you are 30 points pure and sell you so much money, it may be fake. You can see that the merchants are selling this product in a low-profit promotion. Because the 6460 price mall will extract 30% of the deduction point is 2000; The weight of gold is 2.87 times the price of K gold, so 280 yuan is 800, and the rest is about 2,500 to 3,000 yuan of loose diamonds. There is also a 2% commission for sales staff, 129, 5% tax money, 323. Four-service manufacturers can't sell you a product without making money. They are also free of maintenance fees, which is worth it!