This art deco statement ring is the perfect addition to your jewellery collection featuring a large oval onyx stone surrounded by glistening marcasite gemstones once used as a substitute for the shine of a diamond the natural semi precious gemstone marcasite is now celebrated for its lustre and metallic beautyonyx informationnumber of stones 1stone shape ovalstone size 18x12mmcarat weight 1000naturalcreated natural onyxmarcasite informationnumber of stones 28stone shape roundstone