![Salmue Practical Jewelry Gold Testing Tool Touchstone Portable Gold Detecting Stone for Gold Testing Examination Touchstone Jewelry Tool (L) L Color:L 6] NEW HW VERSION: V3](https://cdn.shopify.com/s/files/1/0595/9906/1172/products/B07SHHVQLH.jpg?v=1648589908)
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6] NEW HW VERSION: V3
Color/Finish Black Oxide
it is tough and unbreakable to prevent leakage
Image3 has shown which terminal will be connected in different position
5S Temperature Compensation： 0-50ºC Life expectancy of Relay: Mechanical≥10
Salmue Practical Jewelry Gold Testing Tool Touchstone Portable Gold Detecting Stone for Gold Testing Examination Touchstone Jewelry Tool (L) L Color:L 6] NEW HW VERSION: V3Salmue Practical Jewelry Gold Testing Tool Touchstone Portable Gold Detecting Stone for Gold Testing Examination Touchstone Jewelry Tool (L) Features: 1. This touchstone is used to verify the gold content in items. 2. Apply a drop acid test on touchstone, real gold will stay on the touchstone, fake one will be dissolved or oxidized to blue. 3. This solution works for testing any gold which you believe to be 10K, 14K, 18K, 22 24K, silver, and platinum
