Jumbo Geode fluoresces under black light

Here's the 7" Jumbo Mexican Tranca Geode we cut open in a previous video all cleaned up and examined under both regular and short wave UV light. Curious whether any of your geodes or minerals fluoresce? Here's the link to the UV light used in this video: amzn.to/3HkktrP

[@edwardoscissormanos469]

does the geode hold a glow green for a couple of seconds after you turn off the black light? I have one that does, but it doesn't glow green under the light. Actually an electric blue under the light, then glows green in the dark. crazy right?

[@DustyAtkinson]

That's awesome! That phenomenon is called phosphorusence (however you spell that crazy word).