thumb|Pleochroism of cordierite shown by rotating a polarizing filter on the lens of the camera thumb|Pleochroism of tourmaline shown by rotating a polarizing filter on the lens of the camera
thumb|Pleochroism of cordierite shown by rotating a polarizing filter on the lens of the camera thumb|Pleochroism of tourmaline shown by rotating a polarizing filter on the lens of the camera
Pleochroism is an optical phenomenon in which a substance has different colors when positioned at different angles with respect to linearly polarized light.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).