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How to prepare: 1.Mark on the battery. 2.Turn the Power Swith On. 3.Confirm the Battery Lamp lights up. 4.Wait for about 30 seconds till the Ready

Andy's Orchids High Accuracy Diamond Tester Pen, Jewelry Diamond Tester Tool, Gem Selector Jewelry Watcher Tool, LED Diamond Indicator Electronic

This diamond tester has a highly compact design, which can perform fast, accurate, and safe diamond testing, which is very suitable for carrying with

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High Accuracy Professional Diamond Tester Pen Jeweler Tool for Novice and Expert - Diamond Selector II 9V Battery Included(Black) : Arts, Crafts & Sewing

High Accuracy Diamond Tester Professional Diamond Tester Pen Jeweler Tool for Novice and Expert

Diamond Tester Professional Pen Tool - KETAR Diamond Rings Jewelry Testing Kit Black Diamond Jewelry Tools Fake Diamonds Gem Tester - Real Diamond Tester Battery Tester Gemstone Diamond Checker Tool