It is a Cartier Solitaire Diamond Ring. The diamond is near colorless grade G color. VVS1 with hard-to-find inclusions even under a microscope. And beautifully cut with a well-balanced cut. So it shines beautifully. The diamond's girdle is engraved with the GIA report number. The GIA report number indicates that this diamond is 0.50ct. G color. VVS1. This diamond ring has a fashionable design. Ring Weight: 0.50ct Color: G Clarity: VVS1 Polish: VERY GOOD Symmetry: GOOD Fluorescence: Medium Blue Material: Platinum 950 Weight: 3.0g Size: US: 4.5 / EU: 48 / JP: 8 Resizing: Not available The dent on the outside of the arm is a hallmark mark. Condition Polished Accessories: None. There is no certificate of authenticity. But a printout of the grade can be obtained by typing the number engraved on the girdle of the diamond into the GIA website.