20 14k Gold Filled Clamshell Bead Tips Great for Bead Stringing & Making Bracelets & Necklaces. This is a new set of 20 14 karat gold filled clamshell bead tips. Used to cover the knots on the end of beaded necklaces or bracelets to join to a clasp. Jewelry that is gold filled has gold content equal to 1/20th or more of the total weight o...