However, the amount of dichroism would be less in such a case than in a true emerald of as deep a color.
Moreover, in tourmaline the dichroism is strongly marked, whereas in jargoon it is remarkably feeble.
The dichroism is feeble too, whereas that of tourmaline is strong.
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.
Almandine garnets also show no dichroism and lack variety of color.
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.
They are also singly refracting and hence exhibit no dichroism and therefore lack variety of color as compared with true ruby.
Neither amorphous minerals, like opal, nor minerals crystallizing in the cubic system, like dichroism.
dichroism di·chro·ism (dī'krō-ĭz'əm)
The property of some solutions of showing different colors at different concentrations.
The property of some crystals of exhibiting two different colors when viewed along different axes.