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An exceptionally grown amethyst geode from Uruguay, whose outer edge bears several small agate eyes. A rare growth constellation, in which the geode has preserved perfect concentric ring structures at several points of its original agate shell.
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An exceptionally grown amethyst geode from Uruguay, whose outer edge bears several small agate eyes. A rare growth constellation, in which the geode has preserved perfect concentric ring structures at several points of its original agate shell.
Agate eyes form at the geode edge through locally stabilized solution islands, where mineral growth proceeds concentrically around a crystallization nucleus. While the main mass of the geode grew with amethyst points, these islands retained their agate banding.
Multiple agate eyes on a single druse are unusual. They show that the geode's inner wall was structurally heterogeneous, with several parallel micro-channels of growth, making it a didactically valuable piece for mineralogical collections.
Uruguayan amethysts from the Artigas Basin are considered to have the most intense color depth. The geodes are extracted from the basalt flows of the Serra Geral Formation, often requiring several days of mining work.
A collector's item with an instructive multi-core genesis and visual outer-inner tension.
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 over time. Dry clean with a soft cloth.
Silikat (Quarz-Gruppe)
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