A fine, complete-all-around, miniature specimen of the classic forest-green pyromorphite that set the standard from this famous locality for colored pyromorphite. Green pyros such as this were always much rarer than the more widespread and plentiful brown pyros from the same general area. This is a showy undamaged miniature, with typical dark olive color. I am told it is almost certainly from the noted Merkur Mine, which produced the fattest such crystals known for their typically dark color, with intergrown curved barrel-shaped crystals as you see here. RARE!