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Description: | Amethyst is the purple variety of quartz. It was believed by the Romans to prevent the wearer from becoming drunk. Amethyst is a popular semi-precious gemstone, which is frequently used in jewellery. This large geode, which formed inside a cavity in volcanic rock, is from Brazil. The honey-coloured crystals are calcite. | License: | http://www.imagine.org.uk/about/copyright/ | Rights holder: | Tyne & Wear Museums | Subjects: | rocks and minerals natural world | Source: | Tyne and Wear Imagine | Identifier: | http://www.imagine.org.uk/details/index.... | Go to resource |
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