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Quick Details

  • Brand Name: DIAPRO
  • Place of Origin: Guangdong, China (Mainland)
  • Model Number: JEM-II
  • Jewelry Tools & Equipments Type: Testers & Measurements
  • color: black

Packaging & Delivery

Packaging Details Each pieces packed in a fake leather bag then put in a color box



Product Overviews


JEM-II Diamond Tester With Ultraviolet Light, Diamond Selector , Gemstone Tester


This diamond tester doesn't react on stones like fake crystals, or simulants such as cubic zirconium, when the probe touches the surface. It is the easiest answer for the vast majority of retail jewelers, pawn brokers and chain stores when faced with the decision of which diamond selector to buy. Why? Because it works reliably and share the most advanced diamond selector technology on the market.
The diamond tester utilizes the feature that diamond has very high thermal conductivity. It can effectively and quickly distinguish natural diamond from all models of diamond simulants and metals, except synthetic Moissanite which has similar thermal conductivity to Diamond.     
There are some diamonds in the market these days which the diamond selector detects even if the diamond is not the genuine one. Have a most reliable & user friendly diamond selector, get the JEM-II diamond tester! 



Equipped with ultraviolet light to test fluorescent reaction of stones.

Easy calibration with Level Meter Volume to match different sizes of stones.
Can distinguish stones as small as 2pt.
Can be connected with A/C adaptor for long time indoor use.
One year limited manufacturer's warranty.



Working voltageDC 9V, 6F22 battery, or AC adaptor(110V- 240V, DC 9V,optional)
Probe warm up timeabout 25 seconds
Working timeabout 5 hours for continuous use
Working temperature18 to 30


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China (Mainland)
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6 Transactions 600+
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Supplier's Trade Assurance Limit: US $39,000
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