A wonderful art deco style sterling silver ring set with a black onyx oval cabochon framed with handset sparkling marcasite gemstonesonyx informationnumber of stones 1stone shap oval cabochonstone size 5x3mmcarat weight 030ctnatural created natural mined stonemarcasite informationnumber of stones 8stone shape roundstone size 2x 170mm 6x 130mmcarat weight 014ctnatural created natural mined stone