In this specimen we can observe a group of quartz crystals with well defined faces and edges. We see a well-developed prism with rhombohedral terminal and trapezohedron faces. Transparence and brilliance are both excellent and with a very uniform smoky tone. It is not easy to find specimens from this Alpine quartz locality.
Note:  Le Règne Minèral. Minèralogie du Massif du Mont-Blanc. Hors Sèrìe V, 1999.