“Hutchinsonite is a rare thallium species. This is the best Hutchinsonite I have ever seen for sale, for the sharp 3-dimensional quality of the crystals and their size. Normally, the mineral occurs as sharp acicular crystals. Seldom do they ever show a true termination. Here, though, you can see even by eye the sharp, wide, chisel-tipped terminations on these large crystals ( to 8 mm!) . They are, moreover, set against gorgeous contrasting orpiment crystals instead of, as you typically see, on brown matrix. ”