Queenberry Sterling Silver Cubic Zirconia Simulated Birthstone European Style Dangle Bead Charm Silde-on (not threaded) Charm Solid 925 Sterling Silver in Polished Finish and Cubic Zirconia Approximately 4.8mm Hole Size Fully compatible with European-style Charm Bracelets such as Pandora, Troll, Biagi, Persona, Ohm, Kay's Charmed Memories and More.