Brooches by John & Dawn Field This Zigzag brooch is made from sterling silver and it features one of our wonderful, lab. grown blue opal triplets set in a brass bezel. This brooch is slightly domed and it measures 30mm in diameter.We offer a choice of twelve different stones, which are, Amber, Amethyst, Pink corundum, Garnet, White moonstone, Blue spinel, Green spinel, man made Opal triplet no.3, man made Opal triplet no.6, man made Opal triplet no.8 and Turquoise. Please select your favourite stone from the 'Finish' drop-down menu. Features Primary Material : sterling silver Other Materials : brass and stone Pin Type : pin Dimensions (mm) : 30 One of a Kind : No Metal : sterling silver Gems : man-made opal triplet Hallmarked : No Cleaning InstructionsThis round Zigzag brooch has been finished with a clear, protective, anti-tarnish coating.