Natural crystal price _ Natural crystal online monopoly, natural crystal from nature, do not need to process, is known as a stone with aura. Uneven outside, fine lines inside, there are plants, is a kind of crystal closest to nature. The growth environment of natural crystals, mostly deep in the ground, caves, need to have a rich source of groundwater, groundwater and more contains saturated silica, at the same time, the pressure needs to be about twice to three times the atmospheric pressure, the temperature needs to be between 550-600℃.