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Clusters of well-formed danburite crystals fluorescent a blue and in some cases, areas of green under midwave and shortwave UV light. The green fluorescent response is due to the trace amounts of uranyl ion (uranium). Calcite fluoresces a nice pinkish-red and displays BIP.
Brief intense phosphorescence, or “BIP”, is a phenomenon where for a brief moment immediately after the shortwave lamp is turned off, it displays a very short-lived, but bright phosphorescence or flash. It’s very difficult to capture this in the photos. Typical for manganese activated calcites.
A major component of rock collecting (for us) is simply getting out in nature. A buddy dragged us out to a very remote area here in middle Tennessee to hunt for fluorescent green agate. Since we consider ourselves pure "Glow Hounds" we weren't anticipating any glow rocks, just the beauty of the area, but we brought our UV lights anyway.
