natural uncut agate precious stone inside melaphyre vesicle black background |
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| navigate by keyword : agate melaphyre basalt mineral stone nodule rock natural gem black background closeup amygdule mineralogy volcanic igneous uncut geology gemstone paleobasalt porphyritic green amygdale vesicle chalcedony quartz silicon silica czech origin precious hard inside collection collectable piece sample northeast bohemia czechia educative one object surface texture uneven rough look yellow rusty brown gray macro orange cavity vesicular extrusive lump jewel cryptocrystalline semiprecious hardness collecting specimen isolated single design wrinkly pattern appearance beige shiny dark reflection |
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| Closeup a nodule of gem in basalt volcanic igneous rock. Mineral piece with origin near Nova Paka, northeast Bohemia |
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