Mollo Diamond Tester Pen & Torch Kit, Battery Included — High-Accuracy Thermal Conductivity Tester

Mollo Diamond Tester Pen is a compact, battery-powered thermal conductivity tool and diamond torch that helps identify diamonds and common gemstones quickly and reliably. The Mollo tester combines a handheld diamond probe with a small torch to reveal light-colour effects and thermal response of stones, offering a portable solution for jewellers, appraisers, and hobbyists. Designed with an ergonomic grip and factory-tested components, the kit arrives ready to use (battery included) and targets fast, on-the-spot evaluation rather than laboratory-grade certification.

How does the Mollo Diamond Tester Pen determine whether a stone is a diamond?

The tester uses a thermal conductivity probe to read heat transfer through the stone while the integrated torch highlights light colour effects. The instrument displays results with a numbered light scale and audible signal for clearer interpretation.

• Probe contacts stone at 90 degrees—firm, steady pressure recommended.
• Lights indicate scale: higher numbers with sound suggest diamond.
• Built-in torch enhances visual cues under the probe during testing.
• A brief warm-up is required for accurate readings.

What do the indicator lights and sounds mean during testing?

Lights correspond to thermal readings and material type; audible tones reinforce high-confidence results. The manual provides thresholds so you can interpret sounds and light counts without external tools.

• 9 lights with sound: consistent with diamond readings.
• 7–8 lights: likely crystal (high silica content).
• 6–7 lights: readings typical for jade-like materials.
• 4–5 lights: results often indicate glass or simulants.

How do I get reliable results with this handheld tester?

Accuracy depends on proper handling, temperature, and contact technique. Follow the warm-up, single-light-check, and firm 90-degree contact steps to minimize false readings, and avoid testing metals or wearing gloves during measurement.

• Turn on device and confirm only one scale light is initially lit.
• Wait for the probe warm-up until the ready lamp is steady.
• Apply steady pressure to make full probe-to-stone contact for a few seconds.
• Repeat the test if the probe slips or gives ambiguous lights.

Can this kit replace professional lab grading or serve all gem types?

The Mollo kit is an identification aid designed for quick field checks and retail use, not a substitute for comprehensive gemological certification. It reliably distinguishes diamonds from many common simulants but may not identify treatments or provide carat, clarity, or colour grading.

• Great for separating diamonds from glass, crystal, and many simulants.
• Not intended for official grading or certification reports.
• May be affected by very small stones, mounted settings, or extreme cold.
• Battery performance improves above 10°C; store and test at moderate temperatures.

Who is this for: Jewellers, pawnshop staff, gem hobbyists, and jewellery retailers who need a portable, easy-to-use tool for on-site diamond checks will find the Mollo Diamond Tester Pen useful. It suits novices who need clear light-and-sound cues and experienced users who want a fast pre-screening device before sending pieces for formal lab analysis. The kit includes the diamond tester, a matching torch, and a battery, and comes from factory-direct stock with inspection and a replacement or refund option if defects are found. Follow the included warm-up and contact instructions for the most consistent results and remember this tool complements—rather than replaces—full gemological testing when certification is required.

FAQ

Q: Does the Mollo Diamond Tester need calibration?

A: Basic calibration is built into the device; follow the startup check ensuring one light is lit. No separate calibration tools are normally required.

Q: Can I test mounted stones with this pen?

A: Yes, small mounted stones can be tested, but ensure full probe contact and be aware settings or metal may affect readings.