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.