QWORK® Electronic Diamond Tester, Portable Gemstone Tester Pen for Diamonds, Sapphire, Ruby, Crystal, Agate, Jade

Accurately tests and identifies real diamonds and multiple gemstones such as sapphire, ruby, agate, and jade. This instrument is a precision electronic instrument, and its operating environment is 5-35 degrees Celsius, and the relative humidity of the air is less than 80%. 9+ indicator lights and a beep for diamonds, 7 lights for emerald, crystal and agate, and specific lights for other gems. During the test, hands must touch the metal plate behind the instrument. Easy operation and simple setup: insert battery, remove probe cap, enable the device, and calibrate on glass., Weight: 0.1873929227 Pounds, Manufacturer: QWORK