The designers at Bones and Feathers Collective melt down recycled bronze bullet casings to mold wax castings of fox, shark, and rattlesnake vertebrae. The result? Necklaces, bracelets, rings, and earrings that make no bones about their anatomical appeal. Bring out your inner animal with this brass rattlesnake vertebrae necklace with brass adjustable chain. Chain adjusts between 16 and 33 inches.