Turbo Sea shell on blue deer skin leather 24″cord. Turbo sea shell is casted in pewter locally in Colorado. Seashells have been worn for protection for over 100,000 years. Seashell jewelry is the oldest form of jewelry known; it has an ancient past and is of great importance. Inside seashells are designs of infinity; which connect us with everything. Let this Sea shell protect, inspire and attract your desires.