Andalusite is named after Andalusia, the province of Spain where it was first discovered. Andalusite comes in a mix of Red and Green and is pleochroic, It is extremely difficult to cut - to orient the gem to get a pleasing mix of Red Orange and Green which are present in the gem.
Andalucite is best known for its strong pleochroism and it's unusual color which is frequently a mixture of both red and green. It isn't considered to be a color change stone but it frequently shows two colors, (red and green) at the same time. Rough crystals will often show green in one direction and red in another. The color is difficult to match on any any standard color chart.
