A stunning art deco ring crafted from sterling silver featuring a central oval black onyx cabochon gemstone surrounded by sparkling marcasiteblack onyx informationnumber of stones 1stone shape ovalstone size 800mm x 600mmcarat weight 100ctnaturalcreated natural black onyxcountry of origin brazilmarcasite informationnumber of stones 14stone shape roundstone size 4 x 150mm 10 x 110mmcarat weight 019ctnaturalcreated natural marcasitecountry of origin austria