Taobao Tiffany crystal is genuine. Judging from the relevant public information, the crystal reserves and exploitation are very high, so the price is not expensive, and there are few imitations of high-quality crystals on the market. Rock crystal is a rare mineral, a kind of gem, and a timely crystal, which belongs to the timely family in mineralogy. The main chemical composition is silicon dioxide, and the chemical formula is SiO2. When pure, colorless and transparent crystals are formed. When containing trace elements such as aluminum and iron, it is pink, purple, yellow and brown.