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The mineral kingdom is the source of base metals, such as copper and iron; "soft stones," such as easy-to-carve soapstone, jadeite, meerschaum and alabaster; hard stones, such as fluorspar and marble; semi-precious stonres such as amethyst, clear and smoky quartz crystal, aventurine quartz, kalgon jasper, Siberian jade, apricot serpentine; and precious metals like silver and gold.

This sample was loaned to the World Chess Hall of Fame from the Saint Louis Science Center Collections.

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  • Title: Amethyst
  • Location Created: Locality unknown
  • Physical Dimensions: 4 x 3 ½ x 1 ¾ in.
  • Provenance: Saint Louis Science Center Collections
  • Type: Violet form of quartz crystal
  • Rights: ©World Chess Hall of Fame, Photo: Michael DeFilippo

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