The necklace is 2- 10g. Take the gold necklace as an example. The lighter female necklace is about 2-3g, and the heavier one is about10g. It is suggested that middle-aged women wear a necklace of about 10g, which looks expensive and rich. Young women are advised to wear a necklace of about 6-8g, which is more delicate and quiet. If you are a petite woman, it is recommended to choose a necklace between 3 and 6 to facilitate activities. Necklace is a chain jewelry made of gold, silver and jewelry. It 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 prayer beads of Buddhist disciples and Catholic cross chains. 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.