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Deshalb ist die Anzahl kompletter transparenter Kristalle sehr gering und wir mussten teilweise mit Bruchstücken vorlieb nehmen
A few very beautiful small black sphenes provide a nice contrast to the green diopside and the white calcite on this small specimen
coarse fracture surface
With several small facetable areas and very good pleochroism
Sapphirine quartz Deshalb ist die Anzahl kompletterArguably the world's best sapphirine crystals currently come from southern Madagascar. These black crystals are characterized by sharp edges and attractively textured surfaces. They are embedded in the matrix with white anorthosite, which provides an attractive contrast to the crystals and the dark matrix of biotite, anorthosite, and sillimanite. First unveiled in Tucson in 2024, these pieces often command four figure prices on the market. As a
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