Rock Crystal var. Gwindel – Oberaargletscher, Bernese Oberland, Switzerland
 
 Flawless, water-clear rock crystal Gwindel on matrix with rock crystals of equally good quality. The part  of the gwindel, which is detached from the matrix, is completely recrystallized and also undamaged. Wonderful collector's piece with an intense lustre from the Oberaar Glacier on the Grimsel in the Bernese highland.