Sienna Sky is fun, colorful jewelry with adorable, pet, nature and whimsical characters. Sienna Sky jewelry is etched from lead-free brass, copper and lead-free nickel silver. Many items are hand-colored with a durable, heat-set finish. Styles are complemented with glass, stone beads, or crystals. Ear wires are sterling, gold fill or niobium -- posts are hypo-allergenic. All nickel silver items, except posts, are lacquered to protect sensitive skin in persons with nickel allergies.