Andalusite is an aluminium silicate mineral that can be found in low-pressure metamorphic rocks. It’s composed of Sillimanite and Kyanite.
Andalusite is well known for its ability to change colors when viewed from different directions. The stone’s colors are a result of pleochroism..
Its color is usually yellow-brown or green-brown, even pink brown. However, there are Andalusite stones that are white, green, red, or orange, too.