Metal: Platinum Marked/Tested: Tiffany & Co, Pt950, 24008266, 1.03ct Gemstones/Diamonds: Laser Inscribed On The Crown Round Brilliant Cut Diamond - 1.03ct (6.50-6.52 X 3.97mm) (See Photos For Full Certificate Information) Precision Of Cut - Excellent, Polish - Excellent, Symmetry - Excellent Clarity: Vs1 Color: F Measurements: Ring Size 7.5 Weight: 5.9g