Use our diamond education to learn about Round Cut, G Color loose diamonds and craft the perfect custom ring she'll appreciate forever. Each of Ritani's responsibly sourced sourced loose diamonds comes with its very own GIA or AGSL certification report, detailing the diamond's 4C grades. You can start here with a diamond, or start with one of our magnificent ring settings, including vintage-inspired halos and sleek bezel settings. Contact our non-commissioned virtual gemologist or our excellent New York based customer service team if you need help or guidance while choosing and purchasing your diamond. When you've chosen a loose stone or engagement ring, you can select to preview it in-person, for free, at one of our US based, local partner jewelers, from Irvine, CA to New York City.