The purple color of purple jade bracelet may be caused by the reflection of light. Timely jade has a smooth surface. When the purple light shines on the surface of the jade bracelet, it may reflect, causing the color you see to turn purple.

It should be pointed out that purple light can be used to identify the authenticity of jade. True jade generally does not glow under violet light, or only a few jade will show some light. If jade is chemically treated, it will generally emit strong fluorescence under purple light. Therefore, if the jade bracelet continues to appear purple under the purple light, it may be fake jade.

The above information is for reference only, and you can also consult a professional jewelry appraisal agency to obtain more accurate information.