An 18 Karat Yellow Gold, Pinkish Brown Sapphire and Chrome Diopside Ring, containing one cushion shape mixed cut pinkish brown sapphire weighing 5.90 carats and two oval mixed cut chrome diopside measuring approximately 7.96 x 6.01 mm.Stamp: 18K.Accompanied by a Gemological Institute of America sapphire report number 6187565083, dated July 14, 2017, stating Species: Natural Corundum, Variety: Sapphire, Color: Pinkish Brown, Enhancement: No indications of heat, 3.90 dwts.