The Loose Diamond of Los Angeles, selling on eBay as "NaturalDiamondCenter" sold me a poorly constructed platinum/diamond engagement ring with flaws visible to the naked eye, a cracked side stone, and most upsetting of all, an asscher cut center stone they claimed to be 1.25 carats and F in color... but upon appraisal was only 1 carat and H in color. The size discrepancy was too large to miss. Additionally, I have been battling them since January over getting a refund. BUYERS BEWARE.