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5 minutes ago - <br> PDF_ The Pocket Book of Stones: Who They Are and What They Teach | AzeztulIte, Amazez Amazez is an amethyst variety of Azeztulite, a silicon-dioxide mineral with a hardness of 7. It was discovered on an island off the southeastern coast of Africa. Angel Wing Blue AnhydriteAngel Wing Blue Anhydrite Angel wing blue anhydrite is a calcium sulfate mineral with an orthorhombic crystal system and a hardness of 3.5. These crystal clusters, which often form in fan-shaped sprays reminiscent of wings, are found in Mexico. Their
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