A beautifully designed art deco style ring with black spinel and marcasite gemstonesblack spinel informationnumber of stones 1stone shape roundstone size 7mmcarat weight 138ctnaturalcreated natural black spinelcountry of origin thailandmarcasite informationnumber of stones 18stone shape roundstone size 100mmcarat weight 016ctnaturalcreated natural marcasitecountry of origin austria