Clear Quartz - Pendant on Black Waxed Necklace Cord With Lobster Clasp

Clear quartz, also called rock crystal, is a transparent variety of quartz made primarily of silicon dioxide. It is valued for its glass-like appearance, hardness, and widespread availability. On the Mohs scale of mineral hardness, clear quartz ranks at 7, which makes it durable enough for jewelry, decorative objects, and certain industrial applications. It can be cut into beads, faceted stones, spheres, carvings, and polished points. In technology, quartz is important because it has piezoelectric properties: when pressure is applied, it can produce a small electrical charge, and when electricity is applied, it can vibrate at a precise frequency. This quality makes quartz useful in watches, clocks, sensors, radios, and other electronic devices. Clear quartz is also used in optical components and laboratory equipment because of its clarity and resistance to heat and chemicals. In spiritual and wellness practices, it is often described as a “healing crystal” or an energy amplifier and may be used for meditation, intention-setting, or décor; however, these claimed metaphysical benefits are not supported by scientific evidence and should not replace medical care.