*Note: The paperwork lists the ring as Yellow Gold, but it is white gold. This ring shines beautifully with timeless elegance and would make a perfect engagement ring or addition to a diamond collection! Ring inside diameter measurement 16 mm (5.5 USA size) I.G.I. Certificate of Authenticity: 14 KT Yellow Gold Mounting (Ring), WT. in total approx. 1.7 DWT., Stamped "14K PLAT .46" & Logo, Containing one natural diamond (set in platinum). C.O.A. #: 32928023 Shape/Cut: Round Brilliant Cut Measurement: 4.75 - 4.83 x 3.10 mm Weight: 0.46 CT (S) Color: Near Colorless (G) Clarity: SI (I) Polish/Symmetry: Good/Good Treatment: none Graded prior to mounting. For authentication purposes. Laserscribed: "IGI 32928023" Purchased from Kay Jewelers in 2007. Original price new: 1735.40 Padded ring box, outer lidded box, ring, and all paperwork included.