I just won a bid of a vintage Blue Sapphire ring at EBTH. It comes with a GIA report (shown on the auction site). Since this is my first purchase from EHBT, I am a bit nervous. The stone is said to be unheated and originating from Sri Lanka in the GIA report. Can I trust it? Also, it's a ring, but in the GIA report, the item is described as a loose stone -- not sure how that is possible. Can anyone provide some insights and suggestions? My DH thinks I am crazy to buy something a few thousands worth off an auction site...