"I ordered 11 gems from this seller. They came fairly quickly and looked fabulous. I had an appraiser test a ruby and sapphire, and they passed. The emerald we tested appeared to be glass, but the appraiser had never heard of nanocrystals. I believe that the green emeralds were nanocrystals as advertised. I have deducted one star however, because the description said the green gems were emeralds grown from nanocrystals, which is a bit misleading. They are not emeralds, but green nanocrystals. Overall though, I am satisfied and I would buy from this seller again."
Lab Created A+Synthetic Red Ruby Oval Cabochon Gemstones-(3x5-20x30mm)