This rare earth Neodymium magnet is useful in separating gold and silver from other materials; An aid for gold testing. It's ideal for metal recyclers, brokers, antique buyers and collectors. You can use it to identify plated jewelry, where steel is often the base metal. You can save valuable time by eliminating any magnetic items before performing an acid test.
**HINT** Remember that spring ring and lobster claw clasps will have a little steel spring inside them so they will stick to the magnet.
It's convenient & handy, a must have for garage & estate sales.
Measures 24mm in diamter and has a 15lb pull strength.
Keep away from electronics such as scales and phones.