Das Kristall- und Mineralientresor

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Alle Artikel Aegirine Agate Alexandrite Almandine Garnet Amazonite Amber Amethyst Ammonite Amphibole Analcime Angelite Anhydrite Anthraxolite Apatite Apophyllite Aquamarine Aragonite Aragonite Sputnik Asterism Azurite Beginners Guide Beryl Birefringence Black Obsidian Black Tourmaline Blue Aragonite Blue Calcite Blue Halite Blue Kyanite Boulder Opal Calcite Caribbean Calcite Carnelian Chalcedony Chalcopyrite Charoite Chatoyancy Chemical Formula Chlorite Chlorite Quartz Chrysocolla Chrysoprase Citrine Clear Quartz Cleavage Clinochlore Cobalto Calcite Cobaltoan Calcite Copal Copper Crocidolite Crystal Habit Crystal System Dispersion Epidote Fancy Jasper Feldspar Ferruginous Quartz Fire Quartz Flower Agate Fluorescence Fluorite Fossil Fracture Fuchsite Fulgurite Garden Quartz Garnet Golden Healer Quartz Grape Agate Green Fuchsite Green Tourmaline Gypsum Hackmanite Halide Halite Hematite Hematoid Quartz Herkimer Diamond Heulandite Hollandite Imperial Topaz Indicolite Iolite Iron Oxide Jasper Kämmererite kunzite Labradorite Lapis Lazuli Larimar Lazurite Lead Lepidolite Lightning Lodalite Lustre Mahogany Obsidian Malachite Manganese Mangano Calcite Mica Mineral Category Mineral Group Minerology Mohs Scale of Hardness Mookaite Muscovite Natrolite Obsidian Ocean Jasper Opal Pectolite Permineralized Wood Photochromism Phyllosilicate Picture Jasper Pietersite Pink Halite Pleochroism Prehnite Pyrite Quartz Red Jasper Refractive Index Rhodochrosite Rhodonite Riebeckite Rubellite Tourmaline Satin Spar Scolecite Selenite Seraphinite Smokey Quartz Sodalite Specific Gravity Stilbite Streak Sugilite Sulphur Tanzanite Tenacity Tenebrescence Tigers Eye Tinaksite Topaz Tourmaline Transparency Turquoise Unakite Uvarovite Vanadinite Yellow Calcite Zebra Calcite Zeolite Zoisite

Tansanit: Das 1967 entdeckte Juwel, das noch zu Ihren Lebzeiten versiegen könnte

von/ durch Laura Konst

Tansanit war der Wissenschaft bis 1967 unbekannt. Jedes jemals gefundene Exemplar stammt aus denselben wenigen Quadratkilometern im Norden Tansanias, und geologische Schätzungen deuten darauf hin, dass die zugänglichen Vorkommen innerhalb weniger Jahrzehnte erschöpft sein könnten. Dieser Leitfaden beleuchtet die metamorphe Geologie, die Vanadium-gesteuerte Farbwissenschaft und den bemerkenswerten Trichroismus eines der seltensten und geografisch am stärksten begrenzten Edelsteine der Erde.

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Das Kristall- und Mineralientresor

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