Diamondnite Dual Tester

RS Mizar gem testers deliver dependable, modern performance in a user-friendly, handheld design. Suitable for checking both mounted and loose stones, this portable tester comes complete with instructions and a 9-volt battery, and is backed by a two-year warranty.

• Quickly distinguishes genuine diamonds from non-diamond simulants such as synthetic moissanite with one-touch testing
• Fast start-up — ready in about 8 seconds, with roughly 1-second recovery between tests
• Fully portable operation powered by a single 9-volt battery (included)
• Automatic shut-off alert after three minutes to help conserve battery life
• Straightforward on/off control with no complicated calibration steps
• Durable gray, shock-resistant housing with clear, easy-to-read indicators