A prism of colors decorated the blue sky in Hunterdon County.
Eyewitness News reporter Crystal Cranmore's dad, James, took a photo of the phenomenon around 11:30 a.m.
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Meteorologist Jeff Smith says the visual effect is created when sunlight goes through a very cirrus cloud.
It's so high in the atmosphere that the cloud is composed entirely of ice crystals.
Every little ice crystal acts as a miniature prism, so when light goes through it, a rainbow effect is created.
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