Tiffany & Co. 1.76tcw F/VS1/VS2 3-Stone Round Brilliant Diamond Engagement RingSave over 40% on new equivalent RRP 21,500. 00. A very rare, rather special Tiffany & Co. diamond and platinum engagement ring, with absolutely exceptional diamonds. Set with three, pristine F VS1 VS2 Round Brilliant Cut Diamonds, each with the enchanting, spellbinding fire and sparkle that makes a Tiffany Diamond unique. The central stone weighs 0. 88ct; each of the others is 0. 44ct, giving a total carat weight of 1. 76ct. They combine magnificently