The pound sterling and the silver dollar used before the liberation of our country are mainly silver and copper alloys.Silver white, with a soft and bright luster, is a favorite decoration among ethnic minorities, Buddhists, and Muslims. Silver jewelry is also the preferred gift for newborns given by people of all ethnic groups in the country. Recently, under the influence of the retro trend, European and American people have been wearing silver inlaid light blue turquoise jewelry that is prone to oxidation and blackening, bringing endless contemplation of ancient civilization. In China, pure silver jewelry has gradually become a beloved choice for modern fashionable women. Silver is one of the metals known from ancient times. Silver is more active than gold, although its abundance in the crust is about 15 times that of gold, it rarely exists in a elemental state, so its discovery is later than that of gold. In ancient times, people already knew how to mine silver. Due to the small amount of silver they obtained at that time, its value was even more expensive than gold. Between 1780 and 1580 BC, the Egyptian dynasty's legal code stipulated that the value of silver was twice that of gold, and even in the 17th century, the value of gold and silver in Japan remained equal. Silver was first used for decoration and tableware, and later became currency.