Use our diamond education to learn about Oval Cut, Good loose diamonds and build the perfect custom ring she'll treasure forever. All of Ritani's high quality loose diamonds are examined by the GIA or AGSL, complete with a detailed grading and certification report. Once you've selected your perfect stone, choose from a diverse range of engagement ring styles, including elegant solitaire and vintage halo ring settings. 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 a loose stone or engagement ring, you can select to preview it in-person, for free, at one of our US based, local partner jewelers, from Irvine, CA to New York City.