Earrings by John & Dawn Field These domed ear studs are made from sterling silver and measure 16mm in diameter. They feature two of our wonderful lab. grown green Spinel 6mm gemstones set in brass bezels. We emboss the pattern into the silver by hand, so each pair will vary slightly. The ear posts and backs are made from sterling silver.We offer a choice of gemstones with these stud earrings, Please choose your favourite stone from the 'Finish' drop-down menu. Features Primary Material : sterling silver Other Materials : brass, green Spinel and lab. grown Fitting Type : Post Dimensions (mm) : 16 diameter One of a Kind : No Metal : sterling silver Gems : Green Spinel lab. grown Hallmarked : No Wire Material : sterling silver Cleaning InstructionsThese ear studs have been finished with a clear, protective, anti-tarnish coating..