Shop our extensive selection of Oval Cut, 0.8 Carat diamonds and build the perfect ring today. 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. When you've picked your gemstone, you can then peruse our large selection of engagement ring settings and metal options, such as palladium or white gold. Our skillful customer service team and non-commissioned gemologist service will add any assistance or advice you need during the selection process. Visit one of our regional jeweler partners, located across the country, to take advantage of our free in-store preview program and see your unattached stone or wedding ring in person (US only).