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Rather than forming into individual single crystals
An extra large and nearly flawless example of the unusual star-shaped crystal formation of golden Muscovite mica crystals
The varying levels of mineral hardness (silica being quite hard
this Amethyst has a slightly reddish hue
Large Ammonite Fossil Pair Pegmatite Minerals Rather than forming into individualThis impressive Ammonite fossil pair comes from Madagascar. The species, Perisphinctes, thrived during the Jurassic Period, approximately 160 million years ago! The shell has been cut in half to display the incredible growth chambers on the inside. Calcite crystals have partially replaced many of the chambers. The front of the pair has been cut and polished to a high gloss finish. The back and sides have been lightly carved. The fossil fluoresces
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