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10 bestDiamond Testersof December 2025

112M consumers helped this year.

1

SkyWhale Diamond and Moissan Tester - High Accuracy Gemstone Hardness Test Tool for Professional Jewelers
SkyWhale Diamond and Moissan Tester - High Accuracy Gemstone Hardness Test Tool for Professional Jewelers

SkyWhale

9.9

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2

HMKIS Diamond Tester, Jewelry Diamond Tester, Thermal Conductivity Meter, Can't Test Metal,Must be Operated with Both Hands
HMKIS Diamond Tester, Jewelry Diamond Tester, Thermal Conductivity Meter, Can't Test Metal,Must be Operated with Both Hands

HMKIS

9.8

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3

Diamond Tester Pen, High Accuracy Jewelry Diamond Tester＋200g/0.01g Mini Jewelry Scale＋60X Mini LED Magnifying, Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter
Diamond Tester Pen, High Accuracy Jewelry Diamond Tester＋200g/0.01g Mini Jewelry Scale＋60X Mini LED Magnifying, Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter

Szxhf

9.6

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4

Gain Express Diamond Tester with Ultraviolet Uv Light
Gain Express Diamond Tester with Ultraviolet Uv Light

GAIN EXPRESS

9.4

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5

Diamond Tester Pen Selector
Diamond Tester Pen Selector

KETAR

9.2

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6

CORCEPTIVE Diamond Tester Pen – Professional Jewelry Gemstone Selector II Tool with LED Indicators & Audio Alert – Portable Tester for Diamonds, Moissanite & Gems
CORCEPTIVE Diamond Tester Pen – Professional Jewelry Gemstone Selector II Tool with LED Indicators & Audio Alert – Portable Tester for Diamonds, Moissanite & Gems

Corceptive

9.0

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7

High Accuracy Professional Diamond Tester Pen, Jewelry Diamond Tester with 60X Mini LED Magnifying&40X Full Metal Illuminated Jewelry Loop Magnifier,Diamond Selector for Novice and Expert
High Accuracy Professional Diamond Tester Pen, Jewelry Diamond Tester with 60X Mini LED Magnifying&40X Full Metal Illuminated Jewelry Loop Magnifier,Diamond Selector for Novice and Expert

Hqdz-td

8.7

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8

Diamond Tester Pen, High Accuracy Jewelry Diamond Tester＋ 60X Mini LED Magnifying, Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter
Diamond Tester Pen, High Accuracy Jewelry Diamond Tester＋ 60X Mini LED Magnifying, Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter

Asahijade

8.5

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9

M MORRIS (DEVICE) Diamond Tester Gemstone Verification Tool - Portable Checker, Battery-Operated Detector With Magnifier, Professional Testing Device (9 Volts, Black)
M MORRIS (DEVICE) Diamond Tester Gemstone Verification Tool - Portable Checker, Battery-Operated Detector With Magnifier, Professional Testing Device (9 Volts, Black)

M MORRIS (DEVICE)

8.2

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10

Manovruti Diamond Tester Machine - Portable Gem or Stone Selector Tool With 9V (Black)
Manovruti Diamond Tester Machine - Portable Gem or Stone Selector Tool With 9V (Black)

Manovruti

8.0

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