Diamond Tester Pen with Thermal Conductivity Meter for Gemstone Identification

Shop gemstones with greater confidence using a compact diamond tester pen designed for quick, convenient checks. This portable thermal conductivity meter uses an electrically heated alloy probe to help identify diamonds by their thermal conductivity. Visual indicator lights and an audible response make results easy to interpret, while the tool can also assist with checking gemstones such as jade and crystal. Lightweight and handheld, it’s a practical choice for jewelers, collectors, resellers, and gemstone enthusiasts.

Key Features

• Gemstone tester designed to help distinguish diamonds and assess compatible stones such as jade and crystal.
• Three-color indicator system provides clear visual feedback, with an audible signal when a diamond response is detected.
• Durable plastic body with an alloy probe combines portability with practical everyday use.
• Compact 41 x 155 x 21 mm design weighs just 57 g and operates with one 9V battery (not included).
  
  

Why Choose Our Diamond Tester Pen with Thermal Conductivity Meter for Gemstone Identification?

Instead of relying on appearance alone, this jewelry testing tool provides an electronic thermal-conductivity check with visual and audible feedback. Its pen-style, lightweight design makes it convenient for quick preliminary gemstone checks at home, in a shop, or while sourcing jewelry.

Perfect For

• Jewelers checking stones during everyday evaluations
• Gemstone collectors expanding or reviewing collections
• Jewelry resellers and secondhand buyers
• Hobbyists learning to identify diamonds and gemstones
• Preliminary checks of diamonds, jade, crystal, and compatible stones
  
  

Check Your Stones with Greater Confidence

Bring a practical testing tool to your jewelry kit and make gemstone checks simpler wherever you go. Order the Diamond Tester Pen today and add convenient thermal-conductivity testing to your collection.