18k Yellow Gold Tiffany & Co. Diamond and Ruby Brooch / Pendant Consign Now DeptJewelrySizeDiameter 1.75 in. 23.24g 18k Yellow Gold Tiffany & Co. Diamond and Ruby Brooch / Pendant, set with 8 diamonds and 8 rubies, marked Tiffany 18k. 23.24g Diameter 1.75 in. Provenance: The Estate of Carole P. Webster, Nantucket Island, Massachusetts Please note that this auction has ended. Click here for an overview of this auction.