Why do jade bracelets change color with the weather?

Because jade is an aggregate and the bracelet is curved, it can achieve the condition of internal reflection. ....

Under different light intensities, the transparency we can see has changed due to internal reflection, so you feel discolored!

If in doubt, take it to a general jewelry store and ask the boss to turn on the light. You will find it more transparent than when the sun shines! More beautiful .....

This is also the usual unkind practice of jewelry stores: customers look satisfied under the lamp and regret it when they go home after buying it!