Sophia D Three-Stone Onyx and Diamond Ring in PlatinumA bold take on a classic three stone ring, this platinum piece features three round brilliant cut natural diamonds totaling 2. 11 carats. Each diamond is framed by calibr cut black onyx and surrounded by a halo of natural round diamonds (0. 31 carats), adding contrast and brilliance. The total onyx weight is 0. 67 carats. A refined scalloped edge and milgrain detailing complete the Art Deco inspired design. Ring size is 6. 5 and available for resizing.