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Quartz - Wikipedia There are many different varieties of quartz, several of which are classified as gemstones Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Europe and Asia
Quartz | Definition, Types, Uses, Facts | Britannica Quartz, widely distributed mineral of many varieties that consists primarily of silica, or silicon dioxide Minor impurities such as lithium, sodium, potassium, and titanium may be present Quartz has great economic importance Learn more about quartz in this article
Quartz Mineral | Photos, Uses, Properties, Pictures Quartz is a mineral composed of silicon and oxygen, with a chemical composition of SiO 2 It is the most abundant mineral in Earth's crust and is resistant to both chemical and physical weathering
Quartz - Minerals Education Coalition Quartz is one of the most common minerals in the Earth’s crust As a mineral name, quartz refers to a specific chemical compound (silicon dioxide, or silica, SiO 2), having a specific crystalline form (hexagonal)