Shop our expanded selection of Radiant Cut, D Color diamonds and build the perfect women's wedding ring today. 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 stunning ring settings, including Art Deco-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. Visit one of our local jeweler partners, located across the US, to take advantage of our free in-store preview program and see your loose diamond or engagement ring in person (US only).