Cufflinks by John & Dawn Field These slightly domed, sterling silver cufflinks feature two blue spinel stones set in brass bezels and they measure 16mm in diameter. The stencils that are hand-embossed into the silver are designed by us. We use these stencils along with various different textures to create an interesting surface pattern. Because these cufflinks are handmade the pattern on each pair will vary slightly.We offer a choice of eleven different gemstones, which are, Amber, Amethyst, Pink corundum, Garnet, Lapis lazuli, White moonstone, Blue spinel, Green spinel, Red and Blue lab. grown opal triplets, Turquoise. Please choose your favourite stone from the 'Finish' drop-down menu. Features Primary Material : sterling silver Other Materials : blue spinel and brass Fitting Type : hinged bar Dimensions (mm) : 16 diameter One of a Kind : No Metal : sterling silver Gems : blue spinel Hallmarked : No Cleaning InstructionsThese cufflinks have been finished with a clear, protective, anti-tarnish coating.