This finely detailed raven skull is made of hot cast jewelers bronze. Under seven grams, it is a comfortable weight to wear without being cumbersome. Like sterling, it can easily be maintained with any metal polish. As the pictures reveal, this three dimensional skull is a miniaturized duplicate of the real skull it is sitting on. I used the real skull to make a mold into which I cast a medium which shrinks proportionally as it cures. From that prototype casting, I made another silicone mold of the now miniaturized skull and cast a resin version that was sent off to my local foundry to be copied in bronze. This little fellow is totally three dimensional, even the bottom has the detail of the original. Just under 1-1/4" long, it is the perfect size to wear anywhere, anytime, even your boss will like it. This beautifully detailed skull has a solid cranium with the bail solidly cast on to the back and fitted with a generous jump ring. I've mounted it on a 24" oxidized brass flat link chain with matching lobster clasp and jump rings. The skull is also available with an oxidized finish as shown in the last picture, just ask. If you don't like the chain or would like it longer or shorter, it can be changed, convo me.