Diamond Tester Pen – High Accuracy Gemstone Selector Tool
Diamond Tester Pen – High Accuracy Gemstone Selector Tool
Identify Real Diamonds Instantly with the Diamond Tester Pen
Whether you're a seasoned gemologist or just starting your jewelry journey, this High Accuracy Diamond Tester Pen gives you fast, reliable results at the touch of a probe. Instantly distinguish genuine diamonds from simulants — no guesswork, no damage to your stones.
Key Features
- Premium Build Quality: Durable ABS housing paired with a high-sensitivity alloy probe, rubber protective cap, and a well-designed heat-conducting plate for consistent readings.
- Fast & Precise Testing: Accurately differentiates real diamonds from common simulants in seconds — completely safe for your gemstones.
- Simple One-Step Operation: Power on, allow the device to warm up, place your finger on the heat-conducting plate, then touch the probe at a 90° angle to the stone. Results are immediate.
- Clear Intuitive Feedback: LED lights and audio beeps make results unmistakable — a beep + light indicates a diamond, continuous buzzing signals metal, and no response means a simulant.
- Portable & Protected: Compact and lightweight design (160 × 40 × 23 mm, 60 g), powered by a single 9V 006P battery. Comes with a leather carry case for safe storage on the go.
Specifications
| Material | 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 |
| Power | 1 × 9V 006P battery (not included) |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × Diamond Tester Pen
- 1 × Leather Carry Case
- 1 × User Manual
Note: The diamond tester set only. Other accessories shown in images are not included. Please read the user manual carefully before use. Slight color differences may occur due to photography lighting. Minor dimensional deviation may exist due to manual measurement.
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Frequently Asked Questions
Q: Can the diamond tester pen detect lab-grown diamonds as well as natural diamonds?
A: Yes — this diamond tester pen identifies diamonds based on thermal conductivity, so it will register both natural and lab-grown diamonds as genuine diamonds. It is designed to distinguish diamonds from common simulants such as cubic zirconia, glass, and moissanite (note: some moissanite types may require an advanced tester).
Q: Does the diamond tester pen come with a battery?
A: The device requires one 9V 006P battery for operation, which is not included in the package. You will need to purchase a 9V battery separately before first use.
Q: Is this diamond selector suitable for beginners with no gemology experience?
A: Absolutely. The intuitive LED and audio beep feedback system means anyone can use it right out of the box — no gemology training required. Simply follow the included user manual and let the clear audio and visual signals guide your results.
Q: How do I interpret the test results from this gemstone tester?
A: The results are straightforward: a beep sound combined with an LED light indicates a diamond; a continuous buzzing sound indicates metal; and no sound or light signal indicates a simulant (non-diamond, non-metal material). Always ensure the device is fully warmed up before testing for the most accurate readings.
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.