... alloy 2)Technics:Die casting with crystal 3)plate:nickel fashional round crystal lapel pin with nickel plated (BS-JL-LP-12132 ... ) Designs and logos as per customers' request5) Plating: nickel, anti-nickel, black nickel, brass, anti-brass, copper, anti-copper, gold, ... black, pearl gold, pear nickel, double plating and more6) Color reference (Pantone color chart) with imitation hard enamel, soft enamel ...