Cold Cast Iron Bird Skull NecklaceEach pendant is approximately 2. 5" long, not counting the copper bail. Each comes with a 14" copper chain. The finish is the result of real chemical processes creating real patina. Treat this piece of jewelry as a delicate Work of Art. Select from two finishes. "Rust" is in the first photo. "Blue" is in the second photo. "Cold Casting" is a term used to describe the process of mixing powder with a resin and applying the mixture into a mold. For this