Diamond Tester Pen, 2nd Gen Rechargeable - Hardness & Thermal Conductivity Analyzer for Verifying Diamonds, Jade, Jadeite, Moissanite & Crystals | LED Indicator

<p>Features:<br>【Intuitive &amp; Safe Operation】Featuring an LCD display and LED indicator, our diamond tester delivers precise, easy-to-read results quickly and safely—without damaging genuine diamonds. Ideal for professionals, collectors, and jewelry business owners.<br>【Easy One-Button Testing】Simply turn on the pen, gently touch the gemstone tip, and wait for the audible alert. Real diamonds trigger a reading above 9 with both light and sound signals; no reaction indicates a fake stone like cubic zirconia.<br>【Adjustable Setting for Stone Size】Easily adapt to different gem sizes using the carat adjustment button: activate 1 light for diamonds over 1.0 carats, 2 lights for 0.5 carats, and 3–4 lights for small or finely-cut stones.<br>【Reliable Thermal Conductivity Detection】The tester uses advanced thermal conductivity sensing to distinguish diamonds from imitations. Note: metals may trigger high-frequency sound due to similar conductivity—always follow correct testing procedures and avoid use on metal, skin, or liquids.<br>【Convenient &amp; User-Friendly】Designed for effortless use with clear visual and audio cues. For best accuracy, always touch the rear panel during testing and ensure proper tip contact—flashing or shutdown may indicate incorrect operation.</p> <p><br>Specification:<br>Model：KD-MD2<br>Working voltage：3.3-4.2V<br>Working temperature：10-40℃<br>Product size：158*45*21mm<br>&nbsp;Adapter (not included in this instrument)<br>Adapter voltage：120-240V<br>&nbsp;Data cable plug：type-c<br>Adapter power：1A/2A<br>Adapter output voltage：5V<br>Internal lithium battery parameters&nbsp;<br>Model：14500<br>Voltage：3.7V<br>Capacity：500mAh</p> <p>Packing List:<br>1 x Diamond Tester Pen<br>1x Charging line 1metre<br>1 x Testing Platform<br>1 x User Manual</p>

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• Intuitive and safe operation with LCD display and LED indicator for precise, easy-to-read results without damaging genuine diamonds
• Easy one-button testing - turn on, touch gemstone tip, real diamonds trigger reading above 9 with light and sound signals
• Adjustable setting for stone size via carat button - 1 light for over 1.0ct, 2 for 0.5ct, 3-4 for small/finely-cut stones
• Reliable thermal conductivity detection distinguishes diamonds from imitations, avoid use on metal/skin/liquids