Sharp and well-defined bismuth crystals up to 11 mm wide form a very elegant and fully complete aggregate sitting on a matrix of little quartz crystals! The rear side is actually equally fine crystalized than the front shown here, possibly even better. Hence the piece can in fact be displayed in multiple ways. Ex "Mineralien-Niederlage der Bergakademie Freiberg, Sachsen" collection, their label is still coming with the piece. Ex Oliver Konczer coll. #139. A great classic specimen in very aesthetic shape!