... amny size and materials let you choose. : Product name: Obsidian Ball/Sphere. Size:Diameter :50mmWe also have animal carvinds,crystal ball,point ... carving for many years , our main products are crystal ball/sphere, point/column, chandelierpendant, amythest geode, massage wand, pyramid, skull, bracelet ... negative or neutral feedback, we will work with you . Natural Obsidian Ball