1, from the picture, it is indeed a natural jade A, but the material of this bracelet is barely waxy, colorless and the ground is not clean. Belongs to low-end jade ornaments. The market price is between 500 yuan and 1000 yuan. If it's bought by an insider, it won't surpass 300 yuan.

2. Because real jade is hard, if you wear a bracelet and rub it with a metal washbasin, it will leave metal traces. This is why metal is not hard enough. I was scratched by your emerald and got some metal powder on your bracelet.

3, this should be a trace left by contact with metal objects, it will wear off after a long time, so don't worry, it will not affect the quality and value.