agate |
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| navigate by keyword : agate asni atlas color cross cut gemology geology metals mineral morocco mountains nature ornament oxides pattern pseudomorph quartz section semiprecious silica specimen stone |
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| A cross section of the agate stone. At the bottom is a gray-blue pseudomorphosis. Multicolored silica rings colored with metal oxides are visible. Origin: Asni, Atlas Mountains, Morocco. |
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