Fluorite on Dolomite

Unknown Owner

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A large, juicy, 3-cm crystal sits in a cluster with smaller fluorites, on a bed of small dolomite crystals, all on massive dolomite. This piece has unusually rich sea foam green-blue color and really for color impact is among the best here, though its phantoms are minimal. This is from a new pocket found at the end of 2008, and quietly trickled into Tucson in 2009. It should be remembered as a very distinct style, something different from any we have seen before for the mine or a fluorite combination. NOTE: these exhibit the photographic property of metamerism. They change colors from halogen and professional bulbs (more blue) to indoor fluorescent lighting and even natural sunlight (more green). Examples from both are shown here. The change is startling if you do not expect it, and quite pronounced in the right lighting.