Shop the best Diamond Tester Professional Pen Tool on Ubuy UK. Test the authenticity of your diamond jewelry with this reliable gemstone checker tool.
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♦【Intuitive Design】Our diamond tester features an LCD display and LED indicator make it easy to read your precise testing results. ♦【Effortless
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【Complete Initialization Settings】 After powering on, turn the wheel so that the 4 green lights are always on to complete the initialization.
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