Diamond does not match certificate

[Mayk]

I lost a small stone from my setting. When I dropped it at a local jeweler to have it replaced they measured my center stone. The measurement was off. Certificate said 6.76 measured twice by two different people at 6.68. I asked for appraisal because ring is new and hadn't received second appraisal since purchase in another state. All measurements came back different (slightly). Jeweler said because of setting the stone was easy to measure. More importantly the color grade came back three levels lower and the clarity grade one level lower. Have bad feeling in stomach about stone... Seeking second appraisal. How common for this to all be different..?.

 

[Cabochon1]

I am so sorry to hear that. What sort of certificate do you have for your stone? Is the cert number laser inscribed in the diamond ?

A similar thing happened to someone here on PS a while ago. When reading the laser inscribed number of the wrong diamond the vendor could see that it was one of his as well and accepted the return...

So I would contact the vendor. I hope it's a reputable dealer.

Keeping my fingers crossed