
Staged product image, the actual product may differ.
A dark amethyst geode pair from Uruguay, whose purple internal lining is accented by light calcite "flowers". The two-mineral genesis is visually clearly discernible.
inkl. MwSt., zzgl. Versand
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A dark amethyst geode pair from Uruguay, whose purple internal lining is accented by light calcite "flowers". The two-mineral genesis is visually clearly discernible.
Amethyst crystallized in the original lava geode from silica-rich solutions. Only after this growth cycle did calcium carbonate-containing solutions penetrate the remaining cavity, allowing the calcite "flowers" to grow as a second generation.
Such multi-generational geodes are relevant to collectors: they document the geological activity sequence of a single cavity structure over long periods. Changes in solution chemistry typically follow tectonic or thermal activity phases.
Uruguayan material from the Artigas Basin traditionally provides the most intense amethyst coloration. The combination with accompanying calcite scalenohedra is valued in the collector trade as a didactic premium piece.
A collector's item with clear mineralogical stratigraphy.
Wir beziehen unsere Kristalle direkt aus den Minen, ohne Zwischenhändler. Mehrmals im Jahr sind wir persönlich vor Ort und kennen die Familien, die diese Steine zutage fördern.
Sie erhalten einen fairen Preis für ihre Arbeit. In unseren Minen arbeiten ausschließlich Erwachsene unter sicheren Bedingungen, und davon überzeugen wir uns bei jedem Besuch.
Wie das vor Ort aussieht, zeigen wir in einem Film, der bei uns im Museum läuft.
Protect from direct sunlight, may fade. Acid-sensitive calcite matrix. Dry clean with a soft cloth.
Silikat (Quarz-Gruppe)
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