A stunning art deco ring crafted from sterling silver featuring a central round black onyx cabochon gemstone surrounded by sparkling marcasite gemstonesblack onyx informationnumber of stones 1stone shape roundstone size 600mmcarat weight 075ctnaturalcreated natural black onyxcountry of origin brazilmarcasite informationnumber of stones 16stone shape roundstone size 4 x 110mm 4 x 100mm 8 x 090mmcarat weight 014ctnaturalcreated natural marcasitecountry of origin