Big Blue Boy's Turtle OT Black Braided Cord Necklace 18" Pewter Pewter Tribal Styled Turtle Pendant on an 18 inch Necklace. Show your love of the aquatic world with this Pewter Pendant Necklace on 18 inch cord braided cord! Approximately 18 inch Braided Cord with Metal Clasp. Braided 18" cord Size 18"