It is true that jadeite appears purple under 365 violet light. Purple light, also known as ultraviolet light, can emit ultraviolet light, and jade has a special reaction to ultraviolet light. Some trace elements in jadeite, such as iron and chromium, will be activated by fluorescence under ultraviolet irradiation, thus forming purple luster. Therefore, if the jadeite is irradiated with purple light, it will appear purple light. This is due to the activation of fluorescence in jadeite crystals. Under ultraviolet irradiation, photons in jadeite interact with special minerals to produce purple fluorescence effect. It is a common method to irradiate jadeite with purple light in jewelry identification. Through the irradiation of purple light, we can better observe the color and internal details of jadeite. Therefore, it is very normal and common to irradiate jadeite with purple light in jewelry industry.