A SHARP and unusually thick, large example of this replacement for which Pribram is probably the single most famous locale in the world. The silver has completely replaced the earlier dyscrasite, including a fat, doubly-terminated, 3-cm-long crystal in the center of this nicely-trimmed specimen! OLD MATERIAL from the personal colelction of Pribram specialist Josef Vajdak, with his personal collection label (i.e. not his dealer stock)