3 thoughts on “I bought a 750 diamond ring in Macau and 18K Platinum DC0.212CT, but there was no certificate. They said that there was a certificate that had a diamond to reach 30 or more?”
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Diamonds generally make a certificate alone at 30 points, and 30 minutes will even claim a finished certificate.
Each diamond has a certificate. Whether it is a national inspection or not, the diamond GIA above the score of or above will issue a certificate but not every one has GIA proof
Generally, the broken diamonds below 20 points are worthless, there is no need to do a certificate!