2 kinds of sound, 3 kinds of color lights, easy to identify the authenticity of the . Non-destructive testing, easy and accurate operation. Pocket, handheld type, easy to use. High accuracy and quick response, it is speical designed to quickly distinguish natural diamonds from various diamonds. Features: Made of high quality material, strong, and good performance, long service . The principle is based on the different thermal conductivity of diamonds and various imitation diamonds. Working power supply: DC9V battery (battery not included), Weight: 0.15873282864 Pounds, Manufacturer: Aisuoka
2 kinds of sound, 3 kinds of color lights, easy to identify the authenticity of the . Non-destructive testing, easy and accurate operation. Pocket, handheld type, easy to use. High accuracy and quick response, it is speical designed to quickly distinguish natural diamonds from various diamonds. Features: Made of high quality material, strong, and good performance, long service . The principle is based on the different thermal conductivity of diamonds and various imitation diamonds. Working power supply: DC9V battery (battery not included), Weight: 0.15873282864 Pounds, Manufacturer: Aisuoka
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