Artisan Primitive Spiral Earringsabout . 25 . 50" in diameter 14k gold filled ear wire original form hand carved in wax by Erica Bradbury at our Catskills studio spiral cast in brass at a small family owned shop in New York City it is natural for materials like brass and sterling silver to oxidize over time, so avoid excessive water and moisture and keep clean with the polishing cloth included with purchase.