26 diamonds, 0.39ct, each with an average of 0.0 15ct, that is, 1 cent. The price of a single diamond is around 50 yuan, and 26 diamonds are almost 1300. The processing cost of group drilling is very high. The processing cost like this is at least 800 yuan, plus 2-3 grams of gold, which is about 400-600 yuan.

Diamonds above carats have the largest appreciation space, while small diamonds have little appreciation space.