Lydian stone

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Description

A variety of quartz used used originally as a Touchstone for grading Gold and Silver.

Synonyms and Related Terms

lydiet (Ned.)

Sources Checked for Data in Record

  • Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

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