Examples from the Web for dichroism
The dichroism of tourmaline is stronger than that of ruby and more obvious to the unaided eye.
Moreover, in tourmaline the dichroism is strongly marked, whereas in jargoon it is remarkably feeble.
The zircon, for example, is strongly doubly refracting, but shows hardly any dichroism.
The stone was therefore inspected with the dichroscope and found to possess no dichroism.
However, the amount of dichroism would be less in such a case than in a true emerald of as deep a color.