Brooches by John & Dawn Field This brooch is made from sterling silver and it features an 8mm White moonstone. We designed the concentric circle pattern, which has been embossed into the silver by hand to create a beautiful surface pattern. It is slightly domed and it measures 45mm in diameter, our makers mark 'J D F' and a '925' sterling silver mark are stamped on the back.This Brooch is available with a choice of gemstones, which are, White moonstone, Garnet, Amber, Turquoise, Amethyst, Blue Chalcedony, Light Green Chalcedony, Rainbow moonstone and Blue opal triplet lab. grown. Please select from the 'Finish' drop-down menu. Features Primary Material : Sterling silver Other Materials : White moonstone Pin Type : pin Dimensions (mm) : 45 One of a Kind : No Metal : Sterling silver Gems : Moonstone Hallmarked : No Cleaning InstructionsThis brooch has been finished with a clear, protective, anti-tarnish coating.