Smiley face made with uranium marbles under longwave ultraviolet (UV) light.
Two types of uranium marbles with a UV LED light for sale on eBay with FREE shipping: CLICK HERE
Franklin, New Jersey mineral with calcite glowing red-orange and the small specks of green (willemite) while being illuminated with longwave UV light.
Thunder egg from Oregon with quartz and agate(?) under white light and longwave UV light.
Calcite geode from Durango, Mexico under white light and shortwave UV light.
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