A diamond solitaire ring by Tiffany & Co, the round brilliant-cut diamond weighs 0.81cts and is Tiffany-set® in platinum on a plain knife-edge band, signed and with maker's mark, London hallmarks for 2009, size L, case by Tiffany & CoAccompanied by report number 25157915/k02021007 from Tiffany & Co. stating that the round brilliant-cut diamond weighs 0.81cts, has F colour and VS1 clarity.