The materials of jewellery
There are many materials of jewellery. For example, diomand, bronze, gold, silver. In creating jewellery, gemstones, coins, or other precious items are often used, and they are typically set into precious metals. Modern fine jewellery usually includes gold, white gold, platinum, palladium, titanium, or silver. Alloys of nearly every metal known have been encountered in jewellery. Bronze, for example, was common in Roman times. Most American and European gold jewellery is made of an alloy of gold, the purity of which is stated in karats, indicated by a number followed by the letter K.
Beads are frequently used in jewellery. These may be made of glass, gemstones, metal, wood, shells, clay and polymer clay.Other commonly used materials include glass, such as fused-glass or enamel; wood, often carved or turned; shells and other natural animal substances such as bone and ivory; natural clay; polymer clay; and even plastics.Now more and more new material is widely used in jewelry manufacturing.