Jewelry Diamond Tester Pen,High Accuracy Jewelry Tester Identification Tools Type C Rechargeable for Diamond Crystal Sapphire Ruby

Notes: 1. Instrument up/down button, according to the instrument below the display of the carat adjustment, you do not have to set the carat precisely 2. For diamonds (>1.0 carat), please turn on 1 green light; for diamonds (0.5 carat), please turn on 2 green lights, for small stones (such as cut or conical), please turn on 3-4 green lights. (Please take special care not to touch the buttons on the instrument during the test). 3. When holding the instrument, please make sure to touch the conductive plate on the back with your finger (if you don't touch the plate, you can't measure correctly). 4. When the instrument is switched off, press and hold to switch on to enter the sensitivity page automatically, press plus or minus to select the sensitivity, press UV to confirm. 5. The alarm indicates that the battery power is low, the measurement data is not allowed, please charge the instrument. 6. When measuring loose stones, place the test stone on the loose stone holder and make sure to touch the holder with your hand, or if the stone is already mounted on a ring or setting, make sure to touch the metal part (frame) with your bare hand. The Diamond Selector has metal contact protection to avoid measuring errors. The tip is placed vertically and gently on the test stone . . on the stone. When measuring a diamond test stone, the indication of the instrument will go from green > yellow > red and finally the speaker will make a ticking sound. If the stone is fake the reaction is minimal. When the probe touches a metal part the alarm goes off with a long ticking sound. Therefore, please make sure that the tip is only touching the stone Product Specification: Working voltage: 3.3-4.2V Adapter voltage: 120-240V Adapter power supply: 1A/2A Adapter output voltage: 5V Battery capacity: 800 mAh Packing list: Jewelry Diamond Tester Pen *1

• Multi-functional Jewelry Tester Identification Tools: This gemstone testing equipment is not only a diamond tester, but also a gemstone tester. It can detect the authenticity of gemstones, including diamonds, crystals, onyxes, emeralds and other gemstones of all sizes
• High-precision testing to ensure reliability: Using advanced testing technology, it can quickly and accurately distinguish natural diamonds from other imitations (e.g. moissanite, cubic zirconia, etc.), providing jewellers and buyers with trustworthy appraisal results
• Intuitive Design, Fast & Safe: Our diamond tester comes with an LCD display and LED indicators for easy reading of accurate test results. Designed for fast, accurate and safe diamond testing, this diamond selector ensures that no diamonds are harmed during the testing process. A great gift idea
• Type-C rechargeable design: equipped with modern Type-C charging port, more convenient charging, long battery life, reducing the trouble of frequent battery replacement, suitable for long time use, especially for jewellery shops or on-the-go testing
• Easy to operate: the device is designed to be intuitive, one-button operation, easy to use without complex training. Even beginners can quickly masters the test results within a few seconds to improve work efficiency