Tiffany & Co. Diamond Engagement Ring with original paperwork and certification. Ring has had one owner for 12 years. No visible damage. Bought on January 4, 2011 at the world headquarters in NYC. Excellently cared for - was only ever cleaned by Tiffany & Co. stores. Size: 6 Metal: Platinum Shape: Round Cut: Brilliant Diamond Measurements: 5.13 - 5.18 x 3.22mm Carat Weight: .53 Color Grade: E Fluorescence: Medium Blue Cut: Excellent Symmetry: Very Good Clarity Grade: SI1 Registration Number: K10140575 Included in package: - .53 carat Tiffany & Co. diamond brilliant cut solitaire, set in a size 6 platinum band - Original Tiffany & Co. ring box (felted black clamshell) - Original valuation letter - Original diamond certificate - Original purchase receipt