The fluorescence reaction of jadeite bracelet under violet light indicates that it may be grade B jadeite, which is a product of post-artificial treatment using natural jadeite original stone. Its essence is jadeite raw material, just because the texture is not good enough, and some impurities are more, so merchants beautify it for sale.
Hello! I've only seen purple turn white in the sun. Because purple is light, it is death.
It is normal for ice species violet jadeite to turn purple in natural light, but the color will not change particularly.
There is also a white jade bracelet, which is an optical phenomenon of white jade. This poor quality is white jade, which is easy to reflect light. Especially when the white jadeite is illuminated by purple light, then the purple light will easily penetrate at this time.