黄金化学性质稳定,不易腐蚀,高温下也几乎不被空气氧化。纯金呈特殊金黄色,比重大,硬度小,电阻低,延展性好。一些天然矿如黄铜矿、黄铁矿和金云母等,以及某些合金如黄铜等,具有与黄金相似的颜色和光泽,常以假乱真。黄金除了用于货币、国际工业和某些科技产品外,还大量用于制作首饰和工艺品。黄金饰品的价格与其成色,是否包金、镀金 Gold chemical properties of stable, non-corrosive, high temperature is almost not air oxidation. Pure gold is a special golden yellow, the proportion of large, small hardness, low resistance, good ductility. Some natural minerals such as chalcopyrite, pyrite and phlogopite, as well as some alloys such as brass, have a similar color and luster with gold, often with real ones. In addition to being used for money, international industry and certain technological products, gold is also heavily used to make jewelry and handicrafts. The price of gold jewelry and its fineness, whether gold, gold-plated