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- ... sizes the jewelry tester silver and diamond tester are easy to use even for a new beginner, tester electronic pen is also a great tool to have when testing your own jewelry..
- Wide Uses of Electronic Diamond Tester: The diamond tester professional tester is mainly used for industrial purposes, circuit boards, and printing, industry, gardening, coin, diamond, stamp, jewelry, appraisal, education, geography, home, and office..