This diamond selector remains unresponsive to materials like imitation crystals, or simulants like cubic zirconia, moissanite, and lab-grown diamonds, upon contact with the surface.

   This Diamond Detecter Pen is the easiest answer for the vast majority of retail jewelers, pawn brokers, and chain stores whe n faced with the decision of which diamond selector to buy.Why? 

------Because it works reliably and shares the most advanced diamond selector technology on the market.

Features:

• Equipped with ultraviolet light to test the fluorescent reaction of stones
• Flexible calibration with multi Level Volume to match different sizes of stones
• An option to use or connect with an A/C adaptor (not included) for long time indoor use
• Most compact design and low battery consumption
• Emit audible sounds to give a warning buzzer if the probe touches a metal surface
• The audible and visual indicators of genuine diamond
• With a single press of a button, it can accurately and precisely: 
  • Identifies genuine "natural" diamonds
  • Distinguish stones as small as 2pt
• Supplied with a vinyl pouch, a testing platform for loose stones, and a comprehensive instruction manual
• Brand new and unused

Specifications:

• Probe Warm-up Time: about 25sec
• Working Time: about 5 hours for continuous use
• Suggested Working Temperature: 18°C to 30°C
• Working Voltage: 1 x 9V, 6F22 battery (not included the set) or AC adaptor 110V-240V, DC 9V (not included the set)
• Size: 168 x 31 x 21mm
• Net weight: 55g
  
  

Set includes:

• 1 x Diamond Tester
• 1 x Vinyl Leather Pouch Case
• 1 x Heavy-duty Testing Platform
• English Instruction Manual