A giant 225-pound Brazilian topaz crystal, one of the largest and finest in the world, has been obtained by the Mineralogical Museum, and will be placed on permanent public exhibit about February ...
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Local Profile on MSNPerot Museum Presents Topaz: A Spectrum In Stone ExhibitThe Perot Museum of Nature and Science is introducing a new exhibit: Topaz: A Spectrum in Stone. The exhibit highlights the ...
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