Uncover the Cushion Cut, 2.5 Carat loose diamond of her dreams and view it in store before you buy. All Ritani diamonds have been analyzed by a third party rating agency, and come with a detailed certificate that guarantees their 4C grades are accurate. After you've chosen the perfect one, browse our large store of ring setting options, such as the antique halo engagement ring or the everlasting solitaire setting. Our superb customer service team and free gemologist service will lend any assistance or advice you need during the selection process. When you've chosen your diamond or engagement ring, you can select to preview it in-person, for free, at one of our US based, local partner jewelers, from San Francisco, CA to New York City.