1. The treatment of jadeite appeared in the market in the late 1970s and early 1980s. Synthetic jadeite, also known as artificial jadeite, generally has three kinds: B goods, B+C goods and C goods. In the jewelry industry, jadeite is divided into A, B and C goods.

2. The first one is that the Zhou Dynasty said that Mr. Niu Bingtie said in The History of Emerald that "there were emeralds in the Zhou Dynasty and in the Han Dynasty, but it was not a rare treasure until the end of the Ming Dynasty." Which dynasty is more accurate, Zhou, Han and late Ming, the author's evidence seems to be insufficient.

3. Probably in Song Dynasty, the word jadeite was combined to describe green jasper. At this time, the jade referred to by the word "jade" is the ontology of jade: it is also called Burmese jade because it is mainly produced in Myanmar. The second is pronunciation error. At the end of the Ming Dynasty, jadeite began to enter China in large quantities. Hetian jade produced in China Mountain at that time was called jadeite.