Crystal is a timely crystal mineral. Its main chemical composition is silicon dioxide, the chemical formula is SiO2, also known as water mirror, water wall and water jade. Well-developed single crystals are hexagonal cones, so they are usually blocky or granular aggregates. Generally, it is colorless, gray and milky white, and it is purple, red, smoky (tea), yellow and green when it contains other mineral elements.

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Degaussing method:

1. The tap water washing method is to wash the crystal ore under the tap for more than ten or twenty minutes, preferably about three hours, so that the effect is better. But this will waste a lot of water resources, and unless there is an emergency and there is no other alternative, this method is not recommended.

2. Sea salt burying method is to bury crystal ore in sea salt pile, which is of course an ideal degaussing method with good effect. However, the conditions are inevitably greatly limited. Only those who live near Yantian have this blessing, or those who often have a lot of sea salt at home are feasible.