Sterling silver 050ct black onyx amp marcasite art deco 45cm necklacea wonderful art deco style sterling silver pendant set with a diamond shaped black onyx cabochon offset with three sparkling marcasite gemstones this pendant comes on a matching 45cm sterling silver necklaceblack onyx informationnumber of stones 1stone shapecut diamond cabochoncarat weight 050ctmarcasite informationnumber of stones 3stone shape roundstone size 090mmcarat weight 002ct