Andalusite has a very marked pleochroism. The strong pleochroism of this gem presents the three following colors: ochre, olive green, and brownish-red. Depending on the orientation of the gem, yellow, red, or green tones are more pronounced, often giving the magical impression that the stone sparkles by changing color when moved by light. Andalusite is also famous for being a very rare gem material.
Features of Andalusite Beads
Crystallography: OrthorhombicMohs hardness: 6.5-7.5Birthstone: ---Typical treatments: ---Occurrence: Brazil