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Smithsonian Gem & Mineral Collection
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| Quartz crystal can be used by scientists as a tool for finding other mineral deposits such as petroleum. Quartz crystals also have ornamental value as gemstones. Quartz constitutes 12 percent of the Earth's crust and is used in countless products from computers and watches to satellites and medical equipment. Smithsonian's National Museum of Natural History. |
| Last modified 2026-08-09 MZ |
Smithsonian photos by Dane A. Penland Copyright 1992 Smithsonian Institution |
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