From Brooke's Supernova Collection, one of a kind Radiant Hand Engraved Boulder Opal Cuff with Spinel and Sapphire Pave Detailing. 18K Gold Georgian Bezel set Boulder Opal Cuff with Spinel and Sapphire pave. - Metal: 18K yellow gold and Sterling Silver - Center Stone: Boulder Opal 22.06 ct - Accent Stones: Spinel 0.24 ct, Sapphire 0.25 ct - Setting Measurements: Boulder Opal 29 mm × 22 mm - Bracelet type: One of a kind hand engraved cuff