Quartz crystal is a common mineral made of silicon and oxygen, forming a key part of the Earth's crust. It is known for its hexagonal shape and can be found in various colors, including clear, purple, and pink. Quartz is widely used in electronics, watches, and jewelry due to its piezoelectric properties, which allow it to generate an electric charge when subjected to pressure. In addition to its industrial uses, quartz crystal is often associated with metaphysical properties, believed by some to enhance energy and promote healing. It is also a popular choice for crystal healing practices, where individuals use the stone for its purported benefits.