Use our diamond education to learn about Cushion Cut, 1.5 Carat 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. Once you've selected your perfect stone, choose from a diverse range of engagement ring styles, including 4 prong solitaire and pave halo ring settings. Use our customer service team and virtual gemologist to help assist you if you want experienced assistance. We have partnered with local jewelry stores across the US so that you can see your loose diamond or wedding ring in person and try before you buy.