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Classifications of Stones 9
stones,
as, for instance, Mr. W. B. Cattelle, who includes Oriental cat's-eye,
opal, turquoise, alexandrite, and spinel; the last, in trade parlance,
being the Siam or Balas ruby, and this stone', to the general public,
is a ruby. My classification is as follows:
THE PRECIOUS STONES
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SEMI-PRECIOUS STONES
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