What does "andalusite" mean?

An aluminium nesosilicate mineral, Al₂SiO₅, which can be cut into a gem and displays strong pleochroism, shifting between red, green, and yellow.

Andalusite

noun

noun ·Rare ·Advanced level

Noun

1
An aluminium nesosilicate mineral, Al₂SiO₅, which can be cut into a gem and displays strong pleochroism, shifting between red, green, and yellow. countable, uncountable

From Andalusia + -ite, after the erroneous belief that it was from Andalusia.