A cross section of the agate stone. At the bottom are the chalcedony stalactites (in reverse position). Silica rings colored with metal oxides are visible. Origin: Asni, Atlas Mountains, Morocco.

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agate asni atlas mountains chalcedony color cross section cut gemology geology metals mineral morocco nature ornament oxides pattern quartz semiprecious silica specimen stalactite stone
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  • Details
  • Published on Oct 28, 2022
  • Photo type JPG
  • Category Nature