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Black rectangular diamond tester 6.3 x 1.6 x .9 inches ABS and metal body

The Perfect Part

The Perfect Part Diamond Tester Black 6.3" x 1.6" x .9

SKU CH-4CTF-MRXW4

Portable illuminated tester identifies diamonds and gemstones, powered by a 9V battery, measuring 6.3" x 1.6" x .9"

  • Key featuresDiamond Tester; Plastic + Metal; Color: Black; Material: ABS
  • Portable design fits in a pocket at 6.3" x 1.6" x .9
  • Illuminated selector scale shows clear diamond test results
  • ABS and metal housing resists daily workshop wear
  • Operates on a standard 9V battery (not included)
  • Single-light indication prevents misreading gemstone authenticity

Portable Diamond Tester for Gemstone Verification

This handheld tool identifies diamonds and other gemstones using thermal conductivity. It fits jewellers, pawnbrokers and hobbyists who need quick, on-the-spot authentication without laboratory equipment. The illuminated selector scale shows the result at a glance.

Suits anyone testing loose stones

Not suitable for buyers who require laboratory-grade certification reports or advanced spectral analysis. Users needing to distinguish synthetic moissanite from diamond should note this tester relies on a single thermal method.

Runs on a single 9V battery not included

The unit measures 6.3" x 1.6" x .9" and weighs approximately four ounces. Only one indicator light should illuminate on the scale during a valid test. Construction uses ABS plastic with metal probe components.

How it compares

Measured against everything we stock in Trim Removal & Body Work Tools, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 90% of the 340 comparable items (median $26.99).

Specifications

Product
Brand nameThe Perfect Part

Questions about this item

How often does the 9 V battery need replacing during regular testing sessions?

The tester runs on a single 9 V battery (not included); battery life depends on how many stones you check per session, so keep a spare cell handy for uninterrupted use.

What is the first limitation you hit when testing many gemstones back-to-back?

The probe tip can warm up after continuous use, so pause briefly between stones to keep readings accurate and protect the sensor.

Does the tester make any noise or get hot when left on all day at a jewellery bench?

It operates silently with no fan; only the probe area may become slightly warm during extended use, and it draws minimal power from the 9 V cell.

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