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Faceted Quartz Gem

.Faceted quartz crystals. Close-up of quartz or silicon dioxide (SiO2), one of the commonest minerals in the Earth's crust (12% by volume). The pure, colorless variety is also known as rock crystal and is used as a gemstone and highly prized by collectors. When it contains impurities, these impart a range of colors including white, yellow, pink, blue, green and smoky brown..

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Filename: K10quartz3623.JPG
Copyright: Ted Kinsman / Science Source Inc.
Image Size: 4368x2912 / 4.8MB; Quartz cut earth science gem gems gemstone gemstones geology mineral multiple natural polished quartz silicon dioxide stone stones gem faceted optics critical critical angle light silicon dioxide
Contained in galleries: science

.Faceted quartz crystals. Close-up of quartz or silicon dioxide (SiO2), one of the commonest minerals in the Earth's crust (12% by volume). The pure, colorless variety is also known as rock crystal and is used as a gemstone and highly prized by collectors. When it contains impurities, these impart a range of colors including white, yellow, pink, blue, green and smoky brown..