Quartz (Quartz) is a silicon dioxide (SiO₂) stable homogeneous polymorphic variants, belonging to the three-party crystal system (Trigonal System), the crystal form to hexagonal columnar, often accompanied by conical, rhombohedral or double cone symmetry elements.

Quartz crystals from hydrothermal deposits are very important mineral specimens in geology. Quartz is a common mineral with the chemical composition of silicon dioxide (SiO₂), which is widely found in the earth's crust. In hydrothermal deposits, quartz crystals are usually precipitated from silicon-rich hydrothermal solutions under high temperature and high pressure conditions. These crystals can exhibit complex growth textures, such as oscillatory banded textures, mosaic textures, and concentric ring-banded textures. Quartz crystals often contain fluid inclusions, which can provide important information about the formation conditions of the deposit, such as temperature, pressure and fluid composition.

Also known as honeycomb quartz or honeycomb crystal, it is a quartz mineral with a unique honeycomb like texture. This texture is due to the formation of hexagonal honeycomb like voids or cracks inside quartz crystals during the formation process, which are usually filled with other minerals such as iron oxides or other minerals. The surface usually presents a smooth glass texture, while the honeycomb structure inside gives a unique beauty. The formation is usually related to hydrothermal activity in geological processes, where hydrothermal fluid flows in the cracks of rocks and gradually deposits to form quartz crystals with changes in temperature and pressure. Under suitable geological conditions, it can grow into large crystal clusters.

Quartzite is a metamorphic rock mainly composed of quartz (with a quartz content greater than 85%), formed by metamorphic processes of quartz sandstone and siliceous rocks. It is generally formed by regional metamorphism and recrystallization of quartz sandstone or other siliceous rocks. It is also possible that siliceous rocks near magma undergo thermal contact metamorphism to form quartzite. Common colors include green, gray, yellow, brown, orange red, white, blue, purple, red, etc.