agate |
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| navigate by keyword : after agate asni atlas bottom color colored concentration concentric cross gemology geology metal metals mineral minerals morocco mountains multicolored nature origin ornament oxides pattern pseudomorph pseudomorphosis quartz rings section semiprecious silica specimen spheroidal stone visible with |
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| A cross section of the agate stone. At the top is concentric agate, at the bottom pseudomorphosis after the spheroidal concentration of minerals. Multicolored silica rings colored with metal oxides are visible. Origin: Asni, Atlas Mountains, Morocco. |
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