Pleochroism – seen with a Dichroscope

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Gary A. Roskin, publisher of Roskin Gem News Report, has provided us with these wonderful pictures of a double refraction of light.

This optical phenomenon, also called pleochroism, can be observed very well using a dichroscope. A substance appears to be differently coloured when seen from different angles.

If you’re interested in the News Report of Gary A. Roskin, there’s more information about it here:


Pleochroism - seen with a dichroscope


Pleochroism - seen with a dichroscope