Brooch/pendant with 'Three Graces' shell emblem,

Brooch/Pendant with shell cameo 'Three graces', oval, ap. 35 x 27 mm, 18K yellow gold, 11.5 g, pendant loop can be folded down, L (pendant/brooch) x W: 53/42 x 33 mm, sliding safety catch, 2nd half of 20th century, minimal signs of wear.