925 Sterling Silver Birthday Heart Dangle European Bead Charm using Swarovski Elements Crystal Materials: 925 Sterling Silver (Stamped) and Swarovski Elements 6202 / 6228 Xilion 10mm crystal 925 Sterling Silver (Stamped) and Swarovski Elements 6202 / 6228 Xilion 10mm crystal Slide on (non-threaded) Bead Hole size is approximately 4.4mm