Quartz var. Gwindel - Crispalt, Tavetsch, Grisons, Switzerland
 Ex Josef Kolb collection.
 
 Gwindel are a special variation of growth of quartz and absolute alpine classics for a good reason. The Quartz - Gwindel has a beautiful build up with a clearly visible twist. Despite the slight chlorination, the special clarity of the quartz is easy to see. A beautiful piece of this alpine rarity.
 Under adventurous conditions, the crystals being dug from the so called "Strahlers" at an altitude of about 3,000 meters.