cryptocrystalline |
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navigate by keyword : agate ancient angular antiques chert colour craftmanship cryptocryslline cryptocrystalline cutting deposits earth equipment firm flint fragment geo geology impression india indian jasper layers material mineral mining multicolor nature other oxide piece preparation quartz red rock rocks rough sample science scraper sharp silicon stone subcontinent tool |
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Chert or Cryptocrystalline Jasper with other material . Looks like an ancient tool. |
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