Metal: Platinum Marked/Tested: TIFFANY & CO, PT950, 24778509, 1.39ct Gemstones/Diamonds: Laser inscribed on the crown round brilliant cut diamond - 1.39ct (7.14-7.17 x 4.45mm) (see photos for full certificate information) precision of cut - excellent, Polish - excellent, symmetry - excellent Clarity: IF Color: G Measurements: Ring size 6 Weight: 5.9g