Shop our vast selection of Princess Cut, Si2 diamonds and build the perfect ring today. Each of Ritani's ethically sourced loose diamonds comes with its very own GIA or AGSL certification report, detailing the diamond's 4C grades. After you select the stone that's right for you, complete your ring with a style from our diverse selection of ring settings, from timeless solitaires to sparkling antique halos. Use our customer service team and virtual gemologist to help guide you if you want trained assistance. We have partnered with local jewelry stores across the US so that you can see your loose diamond or designer jewelry in person and try before you buy.