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Durable Materials: The diamond tester is made of chrome-vanadium alloy steel and ABS insulating plastic, which is wear-proof, durable and hard.

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Diamond Selector II Professional Diamond Tester Diamond Indicator Jewelry Gem Crystal Selector Test Pen Tool High Accuracy, Women's, Size: 16, Black

Diamond Tester Pen,High Accuracy Jewelry Diamond Tester＋LED Lighted Slide Out Pocket Magnifying Glass(30X/60X/90) Jeweler Tool Kit Combo，for Novice and Expert Diamond Selector II 9V Battery Included : Arts, Crafts & Sewing

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This diamond tester is specially designed for true and false gemstone testing, not only fast and accurate, but also safe, used to distinguish real

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Digital Tweezers SMDTester Electrical Multimeter Resistance Capacitance Continuity Diode Test Meter G5AB - AliExpress

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Diamond Tester Pen, Diamond Tester with Ultraviolet (UV) Light High Accuracy Jewelry Diamond Tester Professional Diamond Tester Pen Jeweler Tool for Novice and Expert Tool : Arts, Crafts & Sewing

Digital Tweezers SMDTester Electrical Multimeter Resistance Capacitance Continuity Diode Test Meter G5AB - AliExpress

High Accuracy Diamond Tester Professional Jeweler for Novice and Expert - Diamond Selector II 9V Battery Included

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Professional Diamond Tester Gem Tester Pen Portable - Temu