Earrings by John Field These halved ear studs are made from sterling silver with brass decoration and they feature a choice of gemstone and they measure 22mm in diameter when together. We emboss stencils and stamps that we have designed, into the sterling silver to create an interesting surface pattern. Because these earrings are handmade the pattern will vary slightly on each pair. The ear posts and backs are also made from sterling silver.We offer eleven different gemstones which are, Amber, Aqua chalcedony, Amethyst, Pink corundum, Garnet, Lapis lazuli, White moonstone, Blue spinel, Green spinel, Red and Blue lab. grown opal triplets, Peridot quartz, Turquoise. Please choose your favourite stone from the 'Finish' drop-down menu. Features Primary Material : silver Other Materials : brass and lab. grown opal triplet Fitting Type : Post Dimensions (mm) : 22x11x1 One of a Kind : No Metal : silver Gems : lab. grown and opal triplet Hallmarked : No Wire Material : sterling silver Cleaning InstructionsThese halved ear studs have been finished with a clear, protective, anti-tarnish coating.