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Answer:

We have spotted TOUCHSTONE (10 Letters) a total of 1 times in our database. Below you may see the clues associated with TOUCHSTONE and also when and where was it last seen:

Definition

Lydian stone; basanite; -- so called because used to test the purity of gold and silver by the streak which is left upon the stone when it is rubbed by the metal. See Basanite.
Any test or criterion by which the qualities of a thing are tried.

Referring crossword puzzle clues

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