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GIA Cut Research Update
Al Gilbertson, Research Associate, GIA
Ilene Reinitz, Manager, Research and Development, GIA
Spring 2001
There is the Image from MSU OctoNus DiamCalc software. For this
ray of white light, which falls on the table at an angle (see arrow),
up to 17% of the incoming ray is reflect off the surface of the
table, while the remainder refract into the diamond. The refracted
ray begins dispersing and this bundle of colored rays intersects
a facet on the diamond at the bottom and the rest reflects back
towards the crown. The remainder reflects back into the diamond.
Each time the light is reflected from a flat surface, the degree
of dispersion (that is the distance the various colors spread out)
increases.
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| Light traveling through a round brilliant
diamond does many different things |
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