In time, in time or in time, quartzite, a mineral, can easily become a liquid when heated or extruded. It is also a very common rock-forming mineral, which can be found in all three types of rocks. The timely component is the simplest silicon dioxide. High-purity time has glass luster, while pure time is colorless, but it shows different colors because it often contains impurities of transition elements. It is very stable in time and is not easy to weather or become other minerals. Seasonal crystal is a natural mineral whose hardness is second only to that of diamond in nature. Its surface hardness can be as high as Mohs hardness 7.5, and it will not be scratched by iron.