While out relocating a Western Diamondback I caught the other day, I came across an interesting piece of chalcedony out in the desert.  Unusually shaped like a cartoon mouth I shoved in my pocket and continued walking back out of the desert.  Back from my chore, one of the first things I checked after cleaning the stone was it fluorescence.  Using a short wave UV light, which I use to check bedding at the Painted Pony Resort, the Specimen fluoresced green. A previous post about fluorescence shows both yellow and green fluorescent chalcedony found around the estate and this specimen gets added to the pile of big and little specimens that when illuminated with short wave UV light re-emit light at a visible wavelength. 

I use a 395-410 nm UV light to illuminate the desert and look for a variety of fluorescent plants such as lichens, animals, and rocks at night.