This 16mm x 6mm Filigree Pearl Clasp in Sterling Silver looks great and is strong enough to hold almost any Bead strand securely. A Pearl Clasp opens by pinching the two sides together, and has an additional "gravity hook" feature which prevents the Clasp from coming apart while in use. The exact clasp needed to finish the job correctly Size: 16mm x 6mm Sterling Silver with .925 STAMP This 16mm x 6mm Filigree Pearl Clasp in Sterling Silver looks great and is strong enough to hold almost any Bead strand securely. A Pearl Clasp opens by pinching the two sides together, and has an additional "gravity hook" feature which prevents the Clasp from coming apart while in use.