An extremely rare and irreplaceable old-time Pribram specimen of lustrous, flattened, metallic dyscrasite blades emplaced jackstraw fashion in a matrix of allemontite and etched milky quartz. Allemontite is a RARE natural alloy of variable composition of arsenic and antimony. This showy piece is from the now-closed Uranium Mine #21. This is a very FINE combination piece from Pribram. Ex. Josef Vajdak Collection. Vajdak is a noted Pribram specialist. This is, for what it is, a fine piece, valued by Josef quite highly.