Quartzite jade is almost harmless to human body after dyeing. English name: quartz definition: the chemical formula is Hua-SiO _ 2, and the crystal belongs to ternary oxide minerals. It can be used as piezoelectric material, optical material, refractory material, melting material, building material, gem material and mineral medicine. Crystal, agate and glass are mainly composed of silicon dioxide, that is, minerals are difficult to generate energy at normal temperature and pressure. A teacher in a laboratory of the School of Chemistry and Environmental Engineering of China University of Mining and Technology, who asked not to be named, said that gems are minerals and minerals are crystals, and their energy is stored in their own crystal lattice in the form of ionic bonds or valence bonds. If it is gold and silver jewelry, it stores energy in the form of metal bonds. If people want to use their energy, they need to break their chemical bonds and completely destroy their crystal structure in order to obtain this energy. The energy that can break the chemical bonds of molecules is bond energy, which is different from energy. Different substances have different molecular bond energies. The metal bond of gold and silver jewelry is weak, which is a combination of cations and free electrons. Electrons can move freely, so metals can conduct electricity. But the atomic bond between diamond and diamond itself is very strong, and it is very difficult to destroy it. Imagine an ordinary ore, which needs a high external temperature to become a liquid or gas. When the human body wears these crystals, it is only at normal temperature and pressure. Chemical bonds of crystals can only maintain their lattice, but can't transfer their energy to the human body, and can't produce positive and negative energy. Yu Xiaojin, director of the International colored gems Association and deputy secretary-general of China Jewelry and Jade Jewelry Industry Association, said that some people may doubt whether the radioactivity of ore may affect the wearer, but the common minerals containing radioactive elements are feldspar, nepheline, orthoclase, potash feldspar and zircon. And a small amount of special fluorite, special uranium ore, rare earth element ore, etc. Their own crystal lattice contains radioactive elements. Radioactive substances often appear in acidic magma, such as red stone used at home, which is in danger of containing radioactive substances. Every substance has background radiation, but it only emits radioactivity after fusion and fission. Therefore, the background radiation dose of minerals is harmless to human body and can be used by people under the condition of passing the quality inspection of related gems. For example, potash feldspar can be made into decorative sunstone, and qualified products do not contain excessive radioactive elements. Metaphysical scientist Li Shizhen said in Compendium of Materia Medica that crystal is "pungent, cool and nontoxic", which is mainly used for removing annoyance, improving eyesight, removing red eye, soothing heat, reducing swelling and removing obstacles. It can also be used for treating lung pain, pus vomiting, cough, increasing hair and pleasing color, and can be used for a long time to prolong life. It seems to have sedative and cooling effects.