As the largest online diamond retailer, Blue Nile offers the largest collection of the world's finest cut diamonds. Pre-selected for exceptional quality, the cut, color, and clarity of our loose diamonds are evaluated based on a standardized grading scale. Also, each loose diamond is accompanied by a grading report from either GIA, AGSL, or GemEx, independent diamond grading labs with stringent grading and certification guidelines.
Price Match Guarantee
If you find a comparable GIA-graded diamond at a lower price, we'll review to match the price.
Diamond Upgrade Program
We offer a lifetime diamond upgrade program on all GIA and AGSL-graded diamonds.