This shiny 18K yellow gold filled Bead chain necklace comes with an flat lobster clasp. It is 16 + 2 extender (18 in total) inches long and 2 mm wide. This necklace is tarnish-resistant and hypoallergenic. It does not flake off, tarnish or discolor. *** Free Velvet Gift Pouch Included. We have 18K Rose Gold/18K Yellow Gold in stock for this model.