A superb GEM CRYSTAL of diopside from this alpine deposit, long treasured for producing the best diopsides in Europe. Today, these are a classic seldom seen, especially in this size and caliber. Exchanged from the William Larson Collection at Tucson in return for (part of) a large English calcite that to this day he tells me I charged too much for, but which he can seen gushing happily over on the new Whats Hot in Tucson 2008 video...