Atlantic Coral Boy's Sharks tooth Necklace 18" Black/Silver Genuine Sharks Tooth Necklace for the Gator boy or Swamp Girl in your family! Makes the perfect Gift. Sharks Tooth Necklace on an 18 inch Black Cord with Silver and Black Beads. Approximatley 16 Inches in Length These are Genuine Shark Teeth and will vary in appearance. Beads are handmade from Shell or Coconut Shell and will vary in appearance.