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| турмалин | |||
турмалин (Tourmaline ( /ˈtʊərməlɪn/, -/iːn/ TOOR-mə-lin, -leen) is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone and the gemstone can be found in a wide variety of colors.  wikipedia.org) | |||
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| A complex crystalline silicate containing aluminum, boron, and other elements. | |||
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tourmaline : 15 a las frases, 6 temas |
| General | 2 |
| Geología | 7 |
| Makárov | 2 |
| Mineralogía | 2 |
| Ornitología | 1 |
| Tecnología | 1 |