Andalusite

About Andalusite

Displays strong pleochroism showing green, brown, and reddish colors simultaneously when viewed from different angles. This trichroic effect makes each stone unique. Chiastolite varieties contain carbon inclusions forming a natural cross pattern. It is named after Andalusia, Spain. Brazil and Sri Lanka produce gem-quality material. It is relatively affordable. It has been used as a decorative stone since Roman times. It forms under low-pressure metamorphic conditions. The cross-shaped chiastolite was worn as an amulet.