Lampwork European Charm with Sterling Silver Core made in the USA. This is a One of a Kind bead. It has a large hole and will fit all European Charm bracelet systems. This bead has a genuine sterling silver core. I carefully hand line my beads so the core is one piece and cannot be easily removed. This bead is made of silvered glass for beautiful shimmering effects then encased in clear. The size is approximately 13 mm in diameter and 7 mm wide with a 4.5 mm hole.