Origin of dichroism
Examples from the Web for dichroism
Historical Examples of dichroism
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.
However, the amount of dichroism would be less in such a case than in a true emerald of as deep a color.
Also, owing to the dichroism of the ruby the red is variable according to the changing position of the stone.
Although strongly doubly refracting, the hyacinth shows scarcely any dichroism and thus lacks variety of color.