1, the dark color of jadeite can be divided into two situations: one situation refers to the mineral coloring caused by the infiltration of metal ions during the formation of jadeite, which belongs to natural dark color.

2. Blood seeping jade was not infected by the blood of the deceased. Blood seepage is because there is iron near this jade, which has been deposited for a long time. Trivalent iron ions enter jadeite and form red. Or the surface structure of this jade has changed, and it will also form red blood seepage, which looks like human blood.

3. It is possible that trace elements infiltrated into jade while playing or under other circumstances, resulting in the color of jade. There is also a kind of color infiltration after jade cracks. The other is that jade itself is fake, otherwise it is impossible to change color.