Shop our extensive selection of Si2 diamonds and build the perfect ring today. 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 helpful customer service team and offer gemologist service will contribute any assistance or guidance you need during the selection process. Ritani partners with local jewelers all over the United States so you can preview your diamond ring in-person, for free.