Come Out of Your Shell Turtle cufflinks and a gemstone touch. Hand-carved black onyx gemstones are set in sterling silver with with anti-tarnish rhodium finish, all a reminder of a slow-and-steady route to life. Crafted from 925 sterling silver with an anti-tarnish rhodium finish Hand-carved genuine onyx stone. Packaged in a black Jan Leslie pouch perfect for gifting, storage & travel