How do I test gold coins or bars for authenticity?
1. Compare the dimensions with the manufacturer’s specified dimensions.
2. Check that the weight is correct.
3. Measure the conductivity using eddy current measurement. For the final step, we recommend the GoldScreenSensor for investment metals ranging from 1/4 ounce to approximately 2 ounces (depending on geometry and material).
For more information (including details on various sizes and shapes of precious metals), please visit the Goldtest page.