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- noun Plural form of
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He also worked extensively on the coloring of crystals and the fluorescence of fluorites.
He also extensively studied the coloring of crystals and the fluorescence of fluorites.
It's 15 inches wide, 6 inches deep and 8 inches tall, made up of two large octahedron fluorites covered with razor sharp tubes of pyrite with mirror luster.
In Pictures: Highlights Of Marc Weill's Mineral Collection Missy Sullivan 2006