Use our diamond education to learn about Round Cut, 1.2 Carat loose diamonds and build the perfect custom ring she'll marvel at forever. When you buy from us, you can be guaranteed your diamond was responsibly sourced and certified by either the GIA or AGSL. You can start here with a diamond, or start with one of our stunning ring settings, including Art Deco-inspired halos and sleek bezel settings. Our superb customer service team and free gemologist service will give any assistance or direction you need during the selection process. Ritani partners with local jewelers all over the United States so you can preview your designer jewelry in-person, for free.