<https://www.innervisioncrystals.net/products/prophecy-stone-86-g-68mm>
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"We purchased a large old stock supply of these amazing stones because demand was so high after we sold out of the collection of Top Quality pieces. These are all very nice quality, we will be listing the lowest quality last &amp; will be listing them all over the next couple weeks. 500+ of them in the first group.\nProphecy Stones are a very unique stone. They are a pseudomorph, Limonite / Hematite After Marcasite / Pyrite. The original Crystal Structure remains from the Marcasite / Pyrite but has morphed and the molecules changed completely into something else.\nThese are from an extremely remote area of the White Desert in Egypt and are not seen very often. For the past 3 years I have purchased the entire inventory from the source in Tucson. These are not grounding stones metaphysically as one may initially think. They are very high Vibration, 3rd eye, useful in meditation &amp; astral / Visionary Work\n*Some people call these Z stones as made popular by one crystal author, but since I first started working with these stones over 10 years ago, I have always known the pseudomorphs from the White Desert as Prophecy Stones, in their wide variety of shapes, forms. I think that the trademarking of names by certain author / dealers has led to confusion about a number of different stones on the market."
<https://www.innervisioncrystals.net/products/prophecy-stone-86-g-68mm>