Premium Gold Test Stone-Made in the USA 3" x 1-5/8" x 1/4" Chains consistent rotary power transmission

SKU: 7681770539

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Premium Gold Test Stone-Made in the USA 3" x 1-5/8" x 1/4" Chains consistent rotary power transmissionA professional grade gold testing stone made in the USA from natural Arkansas black novaculite, quarried and cut domestically. Used by jewelers and metalsmiths to test precious metals, this stonealso known as a streak stone or touchstoneprovides a reliable surface for acid based karat testing. Beware of cheap imitations made of glass, which stain and degrade quickly under repeated use. To test a metal item, rub or scratch it across the stone's

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