I researched loose diamonds extensively on the major jewelry websites like Bluenile and other pricescope recommended sites as well as in local stores. While it was nice to see an initial sampling in stores, it was just no comparison in pricing, with online retailers offering a much better deal. But a better deal doesn't necessarily mean better quality. I learned that the hard way by "blind" buying on Bluenile and then returning it. The sparkle didn't even match up to the ones in the stores. So second time round I did a ton of researching and comparing and analyzing scope images, videos, candid photos of finished rings on pricescope and weddingbee. Finally, after several weeks, I found the perfect ACA from Whiteflash. Every retailer has their own brand of super ideal diamonds but they don't always deliver in light performance. When you buy a Whiteflash A Cut Above, you have nothing to worry about. This diamond blew the two dozen or so diamonds I'd seen before out of the water.