This stunningly DEEP vortex is absolutely LOADED with bright green UV! Hit it with the blacklight in the dark and you'll be running for your geiger counter, hoping you haven't just killed your family. Ha ha, just kidding, it's totally safe, but seriously, it is BRIGHT and BEAUTIFUL! And that's in the dark, wait til you see it in the light with all of that beautiful rainbow fuming popping everywhere! Really awesome marble ALLLL around, Justin is doing some great work. Signed 'Holle 22'.