Order through our website and ship your K Color diamond engagement ring to a local Ritani jewelry store near you (US only). 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 discovered the stone that's best for you, shop our wide range of engagement ring settings and metals, including popular platinum styles. For expert advice while your shopping, you can question our gemologist or helpful customer service team. Ritani partners with local jewelers all over the United States so you can preview your diamond in-person, for free.