Raw authentic Moldavite is pretty rare and expensive. These pieces were authenticated and are not fake knockoffs which are, sadly, very common. These Moldavite rings are made using copper Electroforming techniques. Electroformed settings are 100% copper. Each ring will be unique, as these stones are raw and vary in shape and size. They range from 5-14mm in size. Please reach out if you would like to choose your stone. Check out my Instagram @27th_ave_designs to see tons of sample pieces and current orders! >>>>>>>>>>>>>>> Please be aware of how your skin interacts with copper before you order a copper jewelry piece! A green skin effect from copper may occur on some skin types - this is a harmless reaction that washes off, but if you would like to avoid it, please order only Solid Silver/Solid Gold/Solid Rose Gold/Gold Fill.