Diamond & Moissanite Tester Pen – Gemstone Authenticity Tool
Diamond & Moissanite Tester Pen – Gemstone Authenticity Tool
Verify Your Gemstones with Confidence
The Diamond & Moissanite Tester Pen is a compact, professional-grade thermal conductivity meter designed to quickly and accurately distinguish real diamonds and moissanite from simulants. Whether you're a jeweler, gemstone collector, or curious buyer, this pocket-sized tool delivers fast, reliable results with zero guesswork.
Why You'll Love It
- Dual Detection: Tests both diamonds and moissanite — ideal for today's growing lab-grown and natural gemstone market.
- High-Sensitivity Alloy Probe: Engineered for precise thermal conductivity readings, giving you accurate results every time.
-
Intuitive Feedback: LED lights and audio beeps make results immediately clear — no training required:
- 🔊 Beep + LED light = Diamond
- 📡 Continuous buzzing = Metal
- 🔇 No signal = Simulant
- Durable ABS Housing: Solid, rugged build with a rubber protective cap to safeguard the probe tip when not in use.
- Portable & Lightweight: At just 60g and compact enough to slip into a pocket or bag, take it anywhere — gem shows, estate sales, or the jeweler's bench.
- Includes Leather Carrying Case: Keeps your tester protected and ready to go at a moment's notice.
How to Use
- Power on the device and wait for the warm-up indicator.
- Place your finger on the heat-conducting plate.
- Touch the probe tip to the gemstone at a 90-degree angle.
- Read the LED and audio response instantly.
Specifications
| Material | ABS Plastic + Electronic Components |
| Color | Black |
| Dimensions | 160 × 40 × 23 mm (6.29 × 1.57 × 0.90 in) |
| Weight | 60 g / 2.11 oz |
| Package Size | 185 × 60 × 30 mm (7.28 × 2.36 × 1.18 in) |
| Package Weight | 118 g / 4.16 oz |
| Battery Required | 1 × 9V 006P (not included) |
| Country of Origin | Made in China |
What's in the Box
- 1 × Diamond & Moissanite Tester Pen
- 1 × Leather Carrying Case
- 1 × User Manual
Note: Battery is not included. Other accessories shown in product images are for display purposes only and are not included.
You May Also Like
- Screw Extractor Drill Bit Set 5 & 6 Pc – Carbon Steel
- Tactical Retractable Spring Rope Keychain Lanyard – Outdoor
Learn more: MedlinePlus on metal sensitivity
Frequently Asked Questions
Q: Can this diamond tester pen detect moissanite separately from diamonds?
A: Yes! This tester is specifically designed to identify both diamonds and moissanite using thermal conductivity technology. Many basic testers cannot differentiate moissanite from diamond — this pen is built to detect both accurately, making it a valuable tool for modern gemstone verification.
Q: Does the diamond tester come with a battery?
A: The tester requires one standard 9V 006P battery to operate, which is not included in the package. You'll need to purchase one separately before first use.
Q: Is this gemstone tester suitable for testing stones that are still set in jewelry?
A: Yes, the high-sensitivity probe can be used on loose gemstones as well as stones set in jewelry. Simply touch the probe tip to the gemstone at a 90-degree angle for an accurate reading. Avoid touching metal prongs or settings, as these may trigger the metal detection response.
Q: How accurate is the thermal conductivity meter?
A: The tester uses a precision alloy probe and a well-engineered heat-conducting plate to deliver fast, reliable thermal conductivity readings. Results are indicated via LED light and audio signals for instant, clear feedback. For best results, always follow the instructions in the included user manual.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.