
Staged product image, the actual product may differ.
A rare clear rock crystal sphere from Madagascar, with included green and brown-black tourmaline crystals. Two tourmaline varieties in one piece: green verdelite and black schorl.
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A rare clear rock crystal sphere from Madagascar, with included green and brown-black tourmaline crystals. Two tourmaline varieties in one piece: green verdelite and black schorl.
Rock crystal (SiO₂) and tourmaline (borosilicate mineral group) grew together in pegmatitic cavities. The two tourmaline colorations show different trace element configurations: schorl (Na, Fe-bearing) is black, verdelite (Mg/Cr-bearing) is green.
Such multicolored tourmaline-in-quartz specimens are classified as premium gemmological pieces in the collector's trade. The combination of two tourmaline varieties in a clear quartz documents complex deposit conditions with oscillating solution chemistry.
Madagascar provides such multi-component quartz from the pegmatite deposits of the Vakinankaratra region. The high clarity of the quartz background allows both tourmaline varieties to be visually clearly distinguished.
A collector's item with a gemmologically valuable multi-mineral composition.
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.
Robust and suitable for everyday use. Wipe dry with a soft cloth, use lukewarm water if necessary.
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