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works easily
The black color is often due to the presence of iron impurities within the crystal structure
The Angelite crystal only develops in areas where gypsum crystals once had contact with water
Usually green
Inclusions of copper
Dragon Tooth Amethyst Large Selenite works easilyAmethyst 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
