Bench Tip #9: Use the Touchstone Method for Testing Purity in

This article explains how to use the touchstone method for testing purity in karat gold.

Practical Jewelry Making Accessory - Two size Gold Detecting Stone, Test Stone is used to verify the gold content in items How to Use - Apply a drop

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Bench Tip #9: Use the Touchstone Method for Testing Purity in Karat Gold

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This touchstone is used to verify the gold content in items Apply a drop acid test on touchstone, real gold will stay on the touchstone, fake one will

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