Overstock has crappy fine jewlery. Before my husband purcahsed my emerald diamond ring, he bought a ring from Overstock.com and it was awful!!!!!!!!!! 2.5 ct SI quality ring and just ughhhhhhh. Of course he had no clue about diamond quality and grades. Needless to say, he returned it, overstock was great about refunding the money, and we TOGETHER chose a different ring. We are MUCH MUCH happier with what we got. PS...... we got ours on Ebay from the sellers Shenoa.
Good luck!
Good luck!