Blue Nile is the largest online retailer of certified diamonds and fine jewelry, offering outstanding quality, selection, and value. At Blue Nile you can find an exceptional selection of diamond, pearl, gemstone, platinum, gold and silver jewelry. It competes with some of the big-name stores and offers competitve prices. It's also got a great search function, so you can narrow your serach by carat weight, cut, clarity, color and more. Finding the perfect engagement ring was never easier!