Discover Blue Nile’s impressive selection of certified, conflict-free diamonds. Create the diamond jewelry of your dreams with Blue Nile loose diamonds.

Blue Nile is the world's leading diamond jeweler online for engagement and wedding rings. Expect lower markups and higher quality fine jewelry. Free Shipping and Free Returns.

Use the Blue Nile diamond guide to understand all the components of a great diamond including the 4Cs, shape, certifications and other options. Learn how to buy a diamond here.

Use our diamond search feature to find IGI and GIA-graded, conflict-free loose diamonds of the highest quality. Browse thousands of options and use the filters to narrow down the selection by carat, cut, color, clarity, shape, and price.

Buying a diamond for an engagement ring or for any milestone jewelry is a big deal. Our diamond buying guide helps you find the perfect diamond.

Fine jewelry is made from precious metals like gold, silver or platinum and set with precious or semi-precious gemstones like elegant emeralds, regal rubies, luminous pearls and brilliant diamonds.

Celebrate your love story with a handcrafted engagement ring. Shop our collection of gold, platinum, gemstone, and ethical diamond engagement rings for women, men and everyone looking to brilliantly showcase their commitment. Easily buy high-quality engagement rings online with settings for any budget and style. We'll help you make your moment.

Use our diamond search to find your perfect round cut diamond. Our most popular diamond shape, round diamonds are a classic that will never go out of style.

Find fancy colored diamonds in a variety of hues, cuts, carats and shapes. Choose a natural or lab made diamond on its own or add your graded gem to a signature piece of Blue Nile jewelry.

Buying one of our certified lab grown loose diamonds can help ensure you’re finding the perfect gem for any jewelry setting. Our GIA and IGI graded lab created loose diamonds are assessed for their cut, color, carat and clarity.