Tiffany & Co. 0.56tcw Triple XXX Harmony D/VS1 Round Brilliant Diamond Engagement RingSave over 40% on new RRP 5,800. 00. An exceptionally pretty 0. 56tcw D VS1 Tiffany Harmony Round Brilliant Cut Diamond Engagement Ring, with a Diamond Platinum Band, in impeccable, as new, Proposal Ready condition. The central diamond, a Triple X 0. 40ct D VS1, is surrounded by 0. 16ct smaller brilliant white diamonds. It is laser inscribed with the Tiffany & Co. diamond registration number, as detailed on the certificate. The ring is supplied