This mine was the base of the famous jewelry industry of Idar-Oberstein.
At this tme the people looked for the so-called Mandeln ( almonds ), how they called the geodes which are completely filled by agate.
The ones with crystals inside were not useful for the production of jewelry and were thrown on the waste heaps.
www.showcaves.comDas Bergwerk war der Ursprung der Schmuckindustrie von Idar-Oberstein.
Dabei wurden allerdings nur die sogenanten Mandeln abgebaut, mit Achat vollständig erfüllte Gasblasen im vulkanischen Gestein.
Drusen mit ihren Kristallen waren für die Schmuckproduktion wenig geeingnet und wurden meist auf den Abraumhalden entsorgt.
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