Shop our expanded selection of Cushion Cut, 1.8 Carat diamonds and build the perfect women's wedding 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. Once you've selected your perfect stone, choose from a diverse range of engagement ring styles, including elegant solitaire and vintage halo ring settings. Contact our expert virtual gemologist or our superb New York based customer service team if you need help or guidance while choosing and purchasing your diamond. You can preview your diamond or completed engagement ring at any one of our local jeweler partners, located all over the US.