Download the Complete Testing Guide (PDF)
• Always test on the stone — applying acid directly to the item can damage it.
Quick Testing Steps
Use these instructions to properly test gold, silver, and platinum using TrueAssay testing solutions and a testing stone. Following the correct process ensures accurate results while protecting the item being tested.
1. Rub the item on the testing stone to create a visible metal streak.
2. Apply a small drop of testing solution onto the streak.
3. Observe the color reaction to determine the metal purity.
4. Clean the testing stone with neutralizer after testing.
Important Safety Tips
• Always test on the stone — applying acid directly to the item can damage it.
• Clean the test stone between tests to avoid contamination.
• Work in a well-ventilated area.
• Wear rubber gloves and eye protection.
Testing should always be performed on a testing stone. Applying testing solution directly to jewelry or metals can permanently damage the item.