Physical Phenomena - Gem Phenomena

Gem Phenomena

In gemology, a phenomenon is an unusual optical effect that is displayed by a gem. Play-of-color, labradorescence, iridescence, adularescence, chatoyancy, asterism, aventurescence, lustre and color change are all phenomena of this type.

Read more about this topic:  Physical Phenomena

Famous quotes containing the words gem and/or phenomena:

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