rock crystal var. Gwindel – Oberaargletscher, Bernese Oberland, Switzerland
 
 Water-clear rock crystal Gwindel on matrix with rock crystals of the best quality. The Gwindel is unusually grown and points upwards, but the twist is clearly evident.
 Wonderful collector's piece with an intense lustre from the Oberaar Glacier on the Grimsel in the Bernese highland.