A stunning art deco ring crafted from sterling silver featuring a central octagon shaped black onyx cabochon gemstone surrounded by sparkling marcasite gemstonesblack onyx informationnumber of stones 1stone shape octagonstone size 550mm x 350mmcarat weight 050ctnaturalcreated natural black onyxcountry of origin brazilmarcasite informationnumber of stones 16stone shape roundstone size 2 x 120mm 10 x 1mm 4 x 090mmcarat weight 014ctnaturalcreated natural marcasitec