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.