Kuromido (Japanese: 黒味銅) is an historically Japanese copper alloy, typically of 99% copper and 1% metallic arsenic, one of the class of irogane metals. It is used in the production of other alloys, and in decorative fittings, as well as in mokume-gane processes. See also Shakudō Shibuichi Corinthian bronze and hepatizon (Black bronze) Electrum Orichalcum Panchaloha Tumbaga External sources References Irogane Copper alloys Arsenic