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Description: | Tourmaline is a semi precious gemstone that occurs in a wide range of colours. This particular type, with a red core and a green outer layer is commonly described as watermelon tourmaline, for obvious reasons. Tourmaline is widely used in jewellery. This mineral is strongly pleochroic, which means that it appears to be differently coloured when viewed along different crystal axes (different directions), a property which helps to distinguish it from the many other gemstones with which it may be confused.
Part: section, Aspect: technique, Description: polished
Part: core, Colour: magenta
Part: crust, Colour: green
, Form: section (of large triangular crystal) | Source: | Tyne & Wear Archives & Museums | Identifier: | emu.ecatalogue.earthsciences.108847 | Go to resource |
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