Color Changing Fluorescence - Fluorite

One of the interesting red fluorescing fluorites that was the subject of last year's Tucson show. Amazing and bright red fluorescing fluorites with a twist! It was something that I had noticed while photographing the specimen. I noticed that it had been going from a bright red to a dimmer shade all the way to purple fluorescence under my 365nm LWOD light. At first I thought it was my imagination but after some further testing it turns out I was right! Luckily this seems to be a repeatable process with the purple eventually going back to the red it originally was. Below is a shot of an in-between transition. Beautiful red fluorescing cubes with purple edges.

Locale: Mapimi, Durango, Mexico

Weight: 3.1oz | 87g

Dimensions: 3.5 x 1.8 x 1.3 in | 90 x 46 x 33 mm