Shop our deep selection of Oval Cut, Si1 diamonds and build the perfect women's wedding ring today. All Ritani products are responsibly sourced and come with a certification report from the credible diamond agencies GIA or AGSL. 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. When you've chosen your diamond or wedding ring, you can select to preview it in-person, for free, at one of our US based, local partner jewelers, from Sacramento, CA to New York City.