Tiffany & Co. Platinum 0.52ct diamond ring, stamped Tiffany & Co., Pt950, .52ct, 25535421, set with a round brilliant cut diamond of 0.52ct (colour H/clarity VVS2) in a six prong setting, above a tapering platinum band, total weight 5.43gm, size P includes Tiffany & Co booklet containing diamond certificate and full lifetime warranty, original box, diamond labratory certificate and valuation certificate dated 2024