Glowing Crystals, Quartz Giant
A macro shot into the edge of a giant quartz specimen standing about 5 foot tall at the entrance of the River Park Inn, Tucson, Arizona. The image was shot in the dark, and the glow comes from nearby lights for the lobby entrance. Each of these quartz crystal spears measure about 3" to 5" in length. From the 2007 Tucson Rock and Gem Show.