Testing for gold and silver made simple.
Accurate results from these easy-to-use plastic bottles with secure, color-coded caps.
Use with test stones.

Testing for 18K

You will need the following tools:

• Black acid testing stone that is washed thoroughly with water prior to each test
• Acids
• Gold testing needles with gold tips - used for comparison with test pieces

Scratch the piece on the stone and apply 18K acid. Any gold that is less than 18K will disappear in less than 30 seconds. Gold that remains on the stone is 18K or higher.