I purchased my engagement ring on Whiteflash. The diamond is a little over 1 ct and the price is excellent. WF website is built so well that it makes online purchase very easy. From researching to inspecting individual pieces of diamonds, I didn't have any difficulty at all. WF has all kinds of security certificates that assure me. The diamond came with its own certificate, as well as third-party appraisal certificate. Very professional. I chose to wire the money to them. Their response was fast, and shipping was even faster. I picked up the package at Fedex location downstairs, only to find that the ring was very carefully packaged. I would highly recommend Whiteflash to my friends.