A beautifully designed art deco style ring with black onyx and marcasite gemstonesblack onyx informationnumber of stones 1stone shape rectanglestone size 14mm x 6mmcarat weight 250ctnaturalcreated natural black onyxcountry of origin brazilmarcasite informationnumber of stones 10stone shape roundstone size 100mmcarat weight 009ctnaturalcreated natural marcasitecountry of origin austria