This is a superb MATRIX-GWINDEL from famous Swiss locality Göscheneralp of Uri Canton. The Gwindel here is excellent developed with super clarity and the colour has a beautiful smoky hue. The crystals are super sharp and mirror bright. Only tiny imperfections, definitely not significant and actually not really worth to mention. At any rate a super specimen with great aesthetics. NOTE: Due to the circumstancers of growth Gwindels very often fall apart the matrix and consequently good Gwindels on matrix are way more rare than loose ones.