Earrings by John Field These ear studs are made from sterling silver and they feature two brass swirls. We emboss a pattern onto the silver with stencils that we have designed, to create an interesting surface pattern. Because these ear studs are handmade the pattern will vary slightly on each pair. The ear posts and backs are made from sterling silver and they measure 13mm in diameter. Features Primary Material : silver Other Materials : brass Fitting Type : Post Dimensions (mm) : 13x13x2 One of a Kind : Yes Metal : silver Hallmarked : No Wire Material : silver Cleaning InstructionsThese ear studs have been finished with a clear, protective, anti-tarnish coating.