Initially I was very hesitant to make such a large purchase (center stone is 2+ ct) over the internet sight unseen. However, being equipped with the many things that I learnt from Pricescope and Whiteflash, and with Whiteflash's excellent return policy, I decided to take the plunge. Their gemologist was extremely helpful. She inspected the stones and let me learn more about the stones I otherwise would never knew by just looking at the reports (such as the color of the inclusions and whether they were visible from other angles). I am so happy about my purchase. Not only have I gone up 0.7 carat by not going to Tiffany's, but I got myself a much better stone (an ACA Hearts & Arrows). I highly recommend their service!