Brand: Tiffany & Co. Model: Solesto Engagement Accessories: Identification book box case Size/Specifications: No. 10.5 (10.5 JP / US 5.25) Ring width: 0.15 cm (0.06 in) Ring inner diameter: 1.6 cm (0.63 in) Size notes: Top approximately 0.9 cm (0.35 in) x 0.9 cm (0.35 in) (*Our measurements) Stone Grain: Diamond: 0.44ct Material: Pt950 750 diamond Weight: 4.3g State/Condition: Overall condition details: There are no noticeable stains or scratches. It is in beautiful condition.