Why didn't the pt950 diamond ring I bought this afternoon have a diamond grading certificate, but only a jewelry and jade jewelry appraisal certificate, with 30 points for diamonds?
What kind of clarity is needed? NGTC is a national quality supervision and inspection center for jewelry and jade, and an authoritative appraisal center in China. The ring holder should be about 3.3 grams, and the current price of platinum is 35 1 (wholesale price, of course, market price is 450-480). Diamonds with a price of 1 168.30 cents should be between IS and VS, and the price should be between 3000 and 3600 (also the wholesale price). The overall price is