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Which of the minerals below show pleochroism?

aquamarine

bixbite

alexandrite

topaz

Pleochroism is an optical phenomenon in which a substance has different colors when observed at different angles, especially with polarized light. Alexandrite appears greenish in daylight where the full spectrum of visible light is present, and reddish in incandescent light which emits less green and blue spectrum.

Ninjai

1

User:Salexmccoy wikipedia → Chrysoberyl#Alexandrite

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