Shop our deep selection of Round Cut, 2.5 Carat diamonds and build the perfect women's wedding ring today. All of Ritani's high quality loose diamonds are evaluated by the GIA or AGSL, complete with a detailed grading and certification report. When you've found your gemstone, you can then peruse our large selection of engagement ring settings and metal types, such as platinum or rose gold. Our superb customer service team and free gemologist service will lend any assistance or advice you need during the selection process. Ritani partners with local jewelers all over the United States so you can preview your engagement ring in-person, for free.