10 bestDiamond Testersof July 2025
112M consumers helped this year.
1

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

10.0
2

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

10.0
3

Diamond Tester Pen Selector
KETAR

9.8
4

Corceptive Professional Diamond Selector, Gold Testing Pen Portable Electronic Gemstone Tester Tool Battery Powered For Agate Ruby Jade
Corceptive

9.7
5

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

9.5
6

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

9.3
7

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

9.1
8

Professional Diamond Selector II, Gold Testing Pen Portable Electronic Gemstone Tester Tool for Agate Ruby Jade
Dupeakya

8.9
9

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

8.7
10

Diamond Tester Pen, High Accuracy Jewelry Diamond Tester,Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter,Accuracy Jewelry-Diamond Tester Pen
Szxhf

8.4

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