The Turquoise Valley Color Group pictured on this Double Line Cuff is comprised of Sleeping Beauty Turquoise & Kingman Turquoise set in Sterling Silver and measures 5/16" wide. Hand crafted and hand made in New mexico by SuperSmith, Inc artists. All SuperSmith Jewelry carries a lifetime guarantee from stones falling out or cracking, with the exception of obvious abuse. Guarantees are handled exclusively by SuperSmith, Inc.