Quartz crystal double terminated with chlorite - Grieswies, Rauris, Austria
 Ex-Josef Kolb collection.
 
 Wonderfully clear double-terminated quartz crystal, partly overgrown with coarse-grained, lustrous chlorite. From the Gwindelkleft by Josef Kolb.
 The Rauris is known for its diverse rock crystal finds. Almost all deposits are in the core zone of the Hohe Tauern National Park. For several years, collecting minerals here has only been possible with a special permit. Because of this, minerals from the Rauris are rarely offered. The quartz crystal comes from the collection of Josef Kolb, who has been regularly searching for minerals there since the 1970s.