Sterling silver black onyx mother of pearl amp marcasite 45cm necklacea wonderful art deco style pendant crafted from sterling silver set with cabochon cut black onyx and white mother of pearl finished with handset sparkling marcasite gemstonesonyx informationnumber of stones 3stone cut cabochoncarat weight 075ctmother of pearl informationnumber of stones 1stone cut cabochoncarat weight 150ctmarcasite informationnumber of stones 21stone shape roundcarat weight 027ct