Tanzanite
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High Quality Content by WIKIPEDIA articles! Tanzanite is the blue/purple variety of the mineral zoisite which was discovered in the Meralani (Merelani) Hills of Northern Tanzania in 1967, near the city of Arusha. It is used as a gemstone. Tanzanite is noted for its remarkably strong trichroism, appearing alternately sapphire blue, violet, and burgundy depending on crystal orientation. Tanzanite in its rough state is usually a reddish brown color. It requires artificial heat treatment to 600 °C in a gemological oven to bring out the blue violet of the stone.[citation needed] Tanzanite is a rare gem.
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GarantieWeitere Informationen
- Allgemeine Informationen
- GTIN 09786131060106
- Genre Geowissenschaften
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- Anzahl Seiten 100
- Herausgeber Betascript Publishing
- EAN 9786131060106
- Format Fachbuch
- Titel Tanzanite
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