Ball shaped ring encapsulated with vanadinite mineral in casting resin. ------ The ball size is 18 mm (0.71 inches). ------ The ring base is made of 925 silver and the size is adjustable. ------ The resin used is of high quality and has crystalline transparency and excellent shine. ------ The piece you receive is the one shown in the photo and it is ready to ship. ------ It is a completely unique piece created by us. ------ This ring is suitable for different occasions and is certainly a very special gift.