Use our diamond education to learn about Pear Cut, 3 Carat diamonds, and browse our broad selection of loose stones. Once you find the best stone for you, choose from one of our stunning ring settings and metal choices, including platinum and rose gold. Each of our diamonds is graded and certified by a reputable third-party agency, such as the GIA or AGSL. If you run into any questions during your purchase, you can consult our detailed diamond education or get expert advice from our virtual gemologist. If you've picked your diamond but you still aren't sure it's “the one”, you can opt for a free in-store preview at any of our local jeweler partners, located all over the US.