Diamond & Gemstone Tester Pen with LED Indicator | Qme

Identify Real Diamonds & Gemstones Instantly

Take the guesswork out of gem verification with this Portable Diamond & Gemstone Tester Pen. Whether you're a jeweler, collector, hobbyist, or just want to verify a stone's authenticity, this compact tool delivers fast, reliable results right in the palm of your hand — no lab required.

How It Works

Simply press the precision metal tip against the surface of any gemstone. The built-in sensor reads the stone's thermal conductivity and delivers an instant result: a red LED light illuminates and an audio tone sounds when a real diamond is detected. No result? The stone is likely a simulant or non-diamond gem. It's that straightforward.

Key Features

• Dual Indication System: Both LED light and audio beep confirm diamond authenticity at a glance — no squinting at a screen
• Portable Pen Design: Slim, lightweight ABS body slips easily into a pocket, bag, or jewelry kit
• Easy One-Hand Operation: Ergonomic pen-style grip makes testing simple and intuitive
• Durable Construction: Built from sturdy ABS plastic for everyday use in professional or hobby settings
• Classic Black Finish: Sleek, professional look suitable for jewelers, estate sales, gemstone markets, and more

Who Is This For?

This gemstone tester is perfect for jewelers, gemologists, collectors, antique dealers, estate sale shoppers, and crafting enthusiasts who want a quick, portable way to verify diamond authenticity on the spot. It also makes a thoughtful and practical gift for anyone with a passion for jewelry or gemstones.

Specifications

• Material: ABS Plastic
• Color: Black
• Indication: Red LED Light + Audio Alert
• Form Factor: Pen / Handheld
• Brand: Qme

For more information on gemstone standards and identification, visit the National Institute of Standards and Technology (NIST), a trusted resource for measurement and material science.

Frequently Asked Questions

Q: How does the Diamond & Gemstone Tester Pen work?

A: The tester uses thermal conductivity technology to distinguish real diamonds from simulants. Touch the precision tip to the stone's surface — if it's a genuine diamond, the red LED activates and an audio tone sounds, giving you a clear, instant result.

Q: What materials is the gemstone tester pen made from?

A: The tester pen is constructed from durable ABS plastic, giving it a lightweight yet sturdy build that's ideal for everyday use in professional jewelry settings or gem-collecting hobbies.

Q: Can this tester identify gemstones other than diamonds?

A: This tool is specifically designed to detect real diamonds based on their unique thermal conductivity. It can help distinguish diamonds from common simulants such as cubic zirconia or glass, but it is not intended as a full multi-gem identifier.

Q: Is this a good gift for jewelry enthusiasts?

A: Absolutely! The Qme Diamond Tester Pen makes a practical and impressive gift for jewelers, collectors, antique shoppers, and anyone who appreciates gemstones. Its compact pen-style design and easy operation make it accessible for beginners and pros alike.