1, the color of real jade will not change under purple light, and it has its original color, but if it is fake jade, it will appear blue-purple under purple light. And if it is B goods or B+C goods, it is blue and white fluorescence.

Generally speaking, yes, but they are all purple. If it is only one or two points in the carving, it may be that polishing powder remains on it. If it is really unclear, it is recommended to spend more than ten yuan to identify the agency.

3. Both B and B+C jadeites show blue-white fluorescence under ultraviolet light. According to the technicians, this is because B-goods and B+C-goods jadeite both contain colloidal substances after post-treatment, and the colloidal substances will show blue-white fluorescence under ultraviolet irradiation.

4, ultraviolet fluorescent lamp to see: purple light can be said to be a good helper to identify the true and false jade. Putting jadeite under purple light, natural jadeite has no fluorescence reaction. If it is dyed jadeite, it will have a fluorescent reaction.