Prophecy Stone – Unique Sahara Desert Mineral Collector Specimen Prasiolite The Green River Formation is

The Green River Formation is one of the world's most celebrated fossil deposits

Origin:  Olkusz Mine

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Prophecy Stone – Unique Sahara Desert Mineral Collector Specimen Prasiolite The Green River Formation isProphecy Stone A Geological Miracle of Transformation Size: Approx. 36mm x 33mm x 38mm Weight: Approx. 58g Few minerals tell a story of transformation quite like the Prophecy Stone. Found only in the remote Sahara Desert regions of Egypt and Libya, these dramatic stones look like dark metallic starbursts sculpted by nature. Their unique appearance comes from a geological process known as a pseudomorph. In simple terms, one mineral replaces another