A beautifully designed art deco style ring with black onyx and marcasite gemstonesblack onyx informationnumber of stones 1stone shape hexagonstone size 14mm x 6mmcarat weight 200ctnaturalcreated natural black onyxcountry of origin brazilmarcasite informationnumber of stones 18stone shape roundstone size 100mmcarat weight 016ctnaturalcreated natural marcasitecountry of origin austria