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The HMKIS Diamond Tester Pen is designed for both novices and experts who need to verify the authenticity of diamonds quickly and accurately. One of its standout features is the dual power supply option, allowing users to choose between a Type-C or a 9V power source, which enhances accuracy and stability. The tool is user-friendly, requiring no professional knowledge to operate; users simply select the diamond size and place the tester on the gemstone. The audible signals and LED indicators make interpreting results straightforward, which is great for anyone needing quick assessments.
The Presidium Instruments Gem Tester II (PGT II) is a solid choice for anyone needing a reliable diamond tester, particularly hobbyists and professionals in the jewelry field. One of its standout features is the Assisted Thermal Calibration (ATC), which allows users to calibrate the device easily to their environment, enhancing accuracy in testing. This model is designed to be compact and portable, making it easy to transport, which is a significant advantage for gemologists on the go or those attending trade shows.
The Hqdz Diamond Selector II is a professional diamond tester pen suitable for both novices and experts. It uses thermal conductivity to distinguish genuine diamonds from fake ones, ensuring high accuracy in testing. The device features an LCD display, LED indicators, and emits audible sounds to differentiate readings, making it user-friendly. However, it requires operation with bare hands and two-hand usage, which might be inconvenient for some users.
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9.8 score
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7.3 score
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