Use our diamond education to learn about Round Cut, 0.9 Carat loose diamonds and build the perfect custom ring she'll marvel at 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. After you've chosen the perfect one, browse our large inventory of ring setting options, such as the diamond halo engagement ring or the timeless solitaire setting. Our excellent customer service team and expert gemologist service will provide any assistance or guidance you need during the selection process. Ritani offers free in-store previews of our diamonds and wedding rings at any of our local jeweler partners, located across the United States.