natural agate gem stone melaphyre with green amygdules dark shiny background |
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| navigate by keyword : agate basalt mineral melaphyre rock gemstone stone uncut nodule closeup mineralogy black background natural geology volcanic igneous extrusive green nodular surface amygdule vesicular cavity chalcedony quartz silicon silica gem precious semiprecious hard inside collecting collectable item specimen czech republic northeast czechia bohemia educative single object design pattern wrinkled rough beautiful reflection gray dark shiny blue vesicle paleobasalt porphyritic knot amygdale jewel cryptocrystalline origin sample piece isolated wrinkly texture wavy uneven look appearance yellow |
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| Nodule of uncut gemstone in basalt extrusive volcanic igneous rock. Mineral from northeast Czechia near Nova Paka |
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