Platinum, marked, makers mark 'W', probably Jeweller Wilm.Oval star sapphire cabochon approx. 6,15 ct. (10 x 8,5 x 6,85 mm), on the sides 6 diam. in navette cut in total approx. 1,60 ct. H.flawless-vsi. Size 50, weight approx. 5,3 g. Details and replacement value of 6.500 Euro according to report of the Gemmologisches Institut Hamburg of 2014.