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These fossils are found in sedimentary rock layers of limestone
Onyx is a variety of chalcedony
2 H inches
Usually green
Dragon Tooth Amethyst Large Selenite These fossils are found inAmethyst is a purple variety of quartz that gets its color from irradiation and inclusions of iron in the crystal lattice. Amethyst has been prized for thousands of years as a gemstone, commonly being used in jewelry. Ancient Greeks believed that amethyst prevented the intoxicating effects of alcohol. Amethyst was considered a precious gem until the 18th century when large deposits were discovered in South America. Its Mohs hardness is 7. You will
