What are the qualities of gold jewelry?

Gold jewelry refers to jewelry made from gold as the main raw material. The chemical symbol for gold is Au, with a specific gravity of 17.4 and a Mohs hardness of 2.5. Gold jewelry can be divided into pure gold and K gold from its gold content. The gold content of pure gol

What are the qualities of gold jewelry?

Gold jewelry refers to jewelry made from gold as the main raw material. The chemical symbol for gold is Au, with a specific gravity of 17.4 and a Mohs hardness of 2.5. Gold jewelry can be divided into pure gold and K gold from its gold content. The gold content of pure gol

What are the functions of jade?

Jade is the representative of oriental culture. It has rich colors. There are all kinds of jade jewelry on the modern market. It is deeply loved by people and has become a symbol of beauty. Zhuang Shoukun, a senior jade jade expert, said that in addition to being beautiful