Cufflinks by John & Dawn Field These Zigzag cufflinks are made from sterling silver and this particular pair feature two of our wonderful, man made opal triplets set in brass bezels. The double hinged backs are also made from sterling silver.We offer a choice of eleven different stones which are, Amber, Amethyst, Pink corundum, Garnet, White moonstone, Blue spinel, Green spinel, Red and Blue lab. grown opal triplets and Turquoise. Please select your favourite stone from the 'Finish' drop-down menu. Features Primary Material : sterling silver Other Materials : brass and stone Fitting Type : hinged bar Dimensions (mm) : 16 One of a Kind : No Metal : sterling silver Gems : man-made opal triplet Hallmarked : No Cleaning InstructionsThese Zigzag cufflinks have been tfinished with a clear, protective, anti-tarnish coating.