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      Scientific American February 24, 1912

      Precious Stones in 1911

      A Vast Industry Dependent on a Demand for a Luxury

      • By Geor*amp*gacute;e F. Kunz on February 24, 1912

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      More in the February 24, 1912 issue of Scientific American
      • Can the Lower Animals Renew their Youth?
      • The Hawke-Olympic Collision
      • Curiosities in Needles
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