Art Nouveau osmena shell pendant-broochThis one of a kind piece features a large, iridescent Osmena pearl set in an ornate silver frame. The organic setting wraps around the shell with sculptural curves and intricate detailing, giving it a slightly surreal, almost marine inspired character. The pendant also functions as a brooch and is backed with a classic pin mechanism. The reverse shows four faded hallmarks stamped into the silver, now mostly illegible, pointing to age and possibly