This piece of listwanite captures both the wide variety of colors seen on the rough outside and the rich mixture of colors found on the polished inside.  This specimen has a great variety of green minerals accented nicely by the striking dark bands.

Rock type: Listwanite

Chemical composition: Listwanites are formed from ultramafic rocks that are partially altered to carbonate minerals.  The main minerals found in listwanites are quartz, serpentines, and carbonates.