Necklace is one of the ornaments of human body and the earliest jewelry. Some necklaces not only have decorative functions, but also have special display functions, such as Catholic cross chains and Buddhist prayer beads. Since ancient times, in order to beautify the human body and the environment, people have made necklaces with different styles, characteristics and styles to meet the aesthetic needs of people with different skin colors, nationalities and aesthetics. This paper introduces the style of necklace from two aspects: material and style. As far as materials are concerned, there are several kinds of necklaces in the jewelry market, such as gold, silver and jewelry.

Among them, there are three kinds of gold necklaces: red gold, 18K and 14K. The fineness of silver includes 92.5% silver, silver plating and gold plating. Jewelry used as necklaces includes high-grade materials such as diamonds, rubies, sapphires, emeralds, emeralds and natural pearls, as well as middle and low-grade materials such as agate, coral jade, ivory and cultured pearls. Jewelry necklaces have stronger decorative effect and richer color changes than gold and silver necklaces, which are especially popular among young people.

Fashion necklaces are popular all over the world, and most of them are made of very common materials. Such as necklaces made of gold, plastic, leather, glass, silk rope, wood, low melting point alloy, etc. , are based on fashion, emphasizing novelty, strangeness, beauty and popularity.