A stunning art deco ring crafted from sterling silver featuring a central diamond shaped black onyx cabochon gemstone surrounded by sparkling marcasite gemstonesblack onyx informationnumber of stones 1stone shape diamondstone size 700mm x 500mmcarat weight 100ctnaturalcreated natural black onyxcountry of origin brazilmarcasite informationnumber of stones 14stone shape roundstone size 2 x 130mm 12 x 090mmcarat weight 013ctnaturalcreated natural marcasitecountry of or