18K gold, weighing 4.56g, plus loss, then the cost price of gold is 1400 yuan, and diamonds are SI, I-J colors. This level can only be considered average, not good, but only the public. Good clarity is VVS, VS, good color is at least above f, and clarity is IF. SI distinguishes between good and bad, and the color from good to bad is D E F G H I J K L M. . According to what you said, the price of this diamond is about 1 200. Together with 200 yuan's production cost, the cost price of this set is about 2,800 yuan, which is generally about 3,000 yuan on the normal line. If it is in a physical store, it is generally 1.5-2 times the price.