Pass for the main Gem & Mineral show at the Tucson Convention Center.
The theme of this year's show was "Shades of Blue: Minerals of the World."
Arizona has a wide variety of blue minerals.
The Fluorescent Mineral Society also had a display featuring the numerous red (calcite) and green (willemite) combinations of Franklin & Sterling Hill NJ.
Specimens and set-up courtesy of George V. Polman.
For more details about the display, see polmanminerals.com.
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