Quartz crystal is a naturally occurring mineral composed of silicon and oxygen. It is one of the most abundant minerals on Earth and can be found in various colors, including clear, purple, and smoky. Quartz crystals are known for their hexagonal shape and can grow in large formations, making them popular in both jewelry and decorative items. In addition to its aesthetic appeal, quartz crystal has practical applications. It is used in electronics, such as watches and radios, due to its piezoelectric properties, which allow it to convert mechanical energy into electrical energy. This makes quartz essential in many modern technologies.