A beautifully designed art deco style ring with black onyx and marcasite gemstonesblack onyx informationnumber of stones 3stone shape arch marquisestone size 2 x 8mm x 2mm 1 x 4mm x 2mmcarat weight 021ctnaturalcreated natural black onyxcountry of origin brazilmarcasite informationnumber of stones 36stone shape roundstone size 100mmcarat weight 032ctnaturalcreated natural marcasitecountry of origin austria