Quartz is one of the most common and widely distributed essential rock-forming minerals in nature, with its main chemical component being silicon dioxide (SiO₂). It has stable chemical properties and a regular, orderly crystal structure. 

Pure quartz is colorless and transparent, with a glass-like texture. If it contains trace impurities or mineral inclusions, it can appear in various colors such as white, pink, purple, yellow, smoke-gray, forming attractive mineral varieties like amethyst, citrine, smoky quartz, and rose quartz. There are many types of quartz, with many varieties classified as semi-precious stones. Since ancient times, various quartz minerals have been widely used to make jewelry and carved artworks, with a long-standing tradition of use in major ancient civilizations around the world.

Quartz has relatively high hardness, making it difficult to carve with an ordinary small knife. Its fracture is typically conchoidal, and it is the most widely distributed rock-forming mineral in rocks, soil, and sand.

The uses of quartz are very extensive: it is an important industrial raw material, used to produce glass, ceramics, and optical devices, and it can also be manufactured into core components for timing and signal transmission in mobile phones and computers (quartz crystal oscillators). Additionally, it is a key raw material for producing high-purity silicon needed for chip production. Quartz is also an important object for geological research and popular science observation, with extensive distribution in geological parks and in most common rocks.