Very few stones are trichroic and this is what makes tanzanites very easy to identify. |
This new trichroic prism assembly is especially useful in a compact color projector employing reflective liquid-crystal light valves. |
Tanzanite has many hues that are reflected due to the fact it is a trichroic gem. |
The trichroic mirror is a thin rectangular wedge 3 by 5 inches in dimension and 0.125 inches thick. |
The gemstone is trichroic in dark blue, green-yellow and red-purple. |