Quartz (slightly "twisted" crystals) with "Chlorite" inclusions (ex Kay Robertson Collection)

Item Description

A really unusual and interesting specimen from Calaveras County featuring sharp, well-formed, prismatic colorless / white crystals of Quartz measuring up to 5.3 cm which are included with green colored "Chlorite". The Quartz crsytals are intergrown to create a very three-dimensional specimen. If you look closely, some of the Quartz crystals have a strange "twisted" form, not unlike a "Gwindel", but not exactly the same either. It is a really different kind of Quartz, and NOT what one would expect from California. I honestly thought this was Swiss or Austrian Alpine specimen when I first saw it. Very cool for any Quartz collector or a collector of US minerals or minerals of California. Valued at $1,400. Ex Kay Robertson Collection (#5472). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017).