I bought these for my fiancee to wear in our wedding, but he thinks they're too big.  He's 6' 2" and muscular, so I thought these 8mm would be better than the 6mm.  Fortunately we have Prime so I'm returning these for the 6mm without a problem.

They are gorgeous earrings, though.  The quality looks good and the stones are cut well (to the naked eye).  My fiancee wanted black diamonds, but I suggested onyx to save some money and still get the look he's going for.  He said he couldn't tell the difference between these and the black diamonds he's seen, so it's a good alternative!  Plus, I won't mind borrowing these to match the rest of my onyx jewelry.  Overall, they're a great product.