This is a gorgeous platinum engagement ring by Tiffany & Co. The ring is centered with sparkling GIA certified Lucida cut diamond that weighs 1.07ct. The color of the diamond is G with VS1 clarity. The ring is signed 1999 Tiffany & Co Lucida PT950 and stamped with the Patent Number and the diamond weight which is 1.07. The ring weighs 5.6 grams. The ring is size 4 1/2 but it can be resized.