Gold and silver ring in the form of a signet ring with a diamond France Material :gold,silver,diamond Weight: 8.22 g Assay: AU 750=18 ct Size: AU 8.5 , Erupean 19 , diameter 18.75mm Creation time: XX years Ring height: 23 mm, width: 20 mm Ring verified by a jewellery and gemstone expert. The ring comes with a certificate from our stationary shop in Krakow in English with a and a jewellery box.