Nacozari Turquoise on Leather Cord No. 2This men's leather cord necklace features three large blue Nacozari turquoise beads. Two sterling silver beads are between the turquoise stones and it's secured with sterling silver end caps and clasp. In your choice of length* and black or brown leather. One of a kind! The stones pictured is what you will receive. turquoise beads measures approximately 1. 3cm leather is 2mm thick . 925 sterling silver Standard Necklace Sizes for Men: 18" (45. 7cm)