Presidium Duo Colored Gemstone Tester

Presidium Duo Colored Gemstone Tester

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The Presidium Duo Tester is built to test thermal conductivity of popular gemstones, loose or mounted.

The Presidium Duo Tester has an easy-to-read dial that indicates the thermal conductivity of the most popular gemstones and simulants, loose or mounted. All stones tested as "diamond" with the thermal tester should be further tested with a diamond/moissanite tester to check for moissanite. Stones are further distinguished based on their reflectivity readings, using the chart supplied with the unit. Operates on included 100-240v AC adapter or runs on 5 AAA batteries (not included). Covered under a 1 year manufacturer's warranty. A simulant standards set, containing samples of synthetic spinel, synthetic sapphire, high zircon, strontium titanate, CZ, GGG and YAG is also available separately (DC709S).

100-240v adapter can also be purchased separately (DC709A2).

How to calibrate:

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