Crystal Gift

Crystal (rock crystal) is a rare mineral, a kind of gem, quartz crystal, which belongs to the quartz family in mineralogy. The main chemical composition is silicon dioxide, the chemical formula is SiO2.
When pure, it forms colorless transparent crystals. When it contains trace elements Al, Fe, etc., it is pink, purple, yellow, brown, etc. Different types of color centers are formed by irradiating trace elements to produce different colors, such as purple, yellow, brown, pink and so on. Minerals containing accompanying inclusions are called inclusion crystals, such as hair crystals, green ghosts, red rabbit fur, etc., and the inner inclusions are rutile, tourmaline, actinolite, mica, chlorite, etc.