Actually the sulfosalts from this super famous locality in the Valais alps are hard to see, due to the size of the crystals, especially to the naked eye,- but this is, considering locale and species, a real monster. A 1 cm in lenght measuring, perfect crystal of rare Sartorite from the type locality. The crystal is superbly terminated, exceeding unusual due to the small pockets here. Striation and luster are excellent as well and the whole specimen is, for that what it is highly aesthetics. A killer specimen all the way. Ex Erberto Tealdi collection.