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Office: 2414 Snedecor Hall
Phone: 294 - 4061
E-mail: opalhsu@iastate.edu
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Opal:
You may think of the opalescence (play-of-color) opals from Australia.
Some people get opalmania from there.
There are also other varieties on the market like
Peruvian opals that have very soft milky pink or blue-green color, and
fire opals from Maxico that are usually translucent yellow to red that may or may not have play-of color.