Early 20th cent. Probably platinum. The aquamarine in princess cut approx. 14,40 ct. (approx. 14,5 x 14,2 x 9,5 mm). The open worked brooch with over 150 diam. in old, 8/8 and rose cut in total approx. over 0,60 ct. Brooch mounting reverse and 1 small diam.-imitation added, small repair. 33 x 37 mm, weight approx. 10 g.