Structure of a quartz

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Photo credit: © John Lens / Alamy / Afripics
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Keywords: achat, chalcedon, coloured, druck, environment, erosion, farbig, future, gebändert, gelblicht, geologie, geology, geschliffen, ground, herstellung, historie, history, mineralien, natur, nature, pressure, quarz, scharf, schmuck, sharp, steine, stones, structure, strukturen, tropen, umwelt, yellow, zukunft