Tiffany & Co 18ct gold, platinum and diamond ring, stamped Tiffany & Co, Au750, Pt950, 68740088, D0.50ct, featuring a 0.50ct round brilliant cut diamond (colour I/clarity VS1), in a platinum six prong setting, on an 18ct yellow gold band, total weight 3.09gm, size L, together with Tiffany & Co retail replacement valuation, Tiffany & Co diamond certificate and AcuVal valuation certificate dated 2023