Quartz crystals. These transparent crystals are rhombohedral macrocrystals. Quartz is a form of silica (silicon dioxide) and is the second most abunda

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Quartz crystals. These transparent crystals are rhombohedral macrocrystals. Quartz is a form of silica (silicon dioxide) and is the second most abundant mineral in the Earth's crust after feldspar. This sample, from France, is about 30 centimetres long.

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Size: 5944px × 4008px
Photo credit: © PASCAL GOETGHELUCK/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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