Prehnite

This is a relatively new material to the lapidary field from Mali, Africa although it is named after it's 1700's discoverer, Colonel Hendrik von Prehn. It's pleasant green color makes beautiful cabs. This slab is full of green moss and very flashy gemmy prehnite.-WET pic.-(3"x2"/2. oz./5mm thick) the top edge may crumble as it is crystal