Here we have a beautiful specimen of most desired silver-sulfosalt Proustite from the famous Schacht 207 (Shaft 207) of Niederschlema in Erzgebirge, Saxony. Definitely a SUPERB, gemmy and lustrous, deep cherry-red Proustite thumbnail from Niederschlema. This beauty is eminently viewable from the display face and is definitely Holy Grail quality. The backside is slightly covered with dull, gray botroyds of native Arsenic. A super thumber in any case and exceeding hard to get hold of nowadays.