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ToolUSA Gold & Silver Testing Keys Set | Determine 10k, 14k, 18k Gold & Silver Purity | Essential for Standard Scratch Test

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$41.99

$ 19 .99 $19.99

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  • VERSATILITY IN TESTING: Comes with four keys for determining the quality of 10k, 14k, 18k gold, and silver.
  • STANDARD SCRATCH TEST: Designed for use with the widely accepted standard scratch test method.
  • ADDITIONAL TOOLS REQUIRED: Must be paired with a testing stone and specific acids (not provided) for accurate results.
  • ENSURE AUTHENTICITY: An effective and precise way to verify the quality and authenticity of precious metals.
  • DURABLE AND RELIABLE: Sturdy keys designed to withstand frequent use and provide consistent results.


ToolUSA Gold Testing Keys (TJ-99804). Comprising four keys, this set is designed to provide a reliable method for determining whether your gold is 10k, 14k, or 18k. An additional key is also provided for testing silver, allowing a comprehensive analysis of your precious metal items. To use these keys, you'll perform a standard scratch test, a widely recognized method in the jewelry industry. By scratching the gold or silver piece against a testing stone and applying specific acids (not included), you can identify the karat of the gold. The resultant color reactions from the acids will indicate the purity of the gold or silver in question. However, it's essential to note that while these testing keys are fundamental tools, the testing stone and the required special acids are not included in this set. Still, when combined, they provide a highly accurate way to measure the quality of precious metals.