Key features

• •LED Jewellery Diamond Tester: Our diamond tester pen professional and drill pen hardness tester for diamond product size: 16 x 4 x 2.1 cm. Weight: 160g. Power supply: 1 x 9V battery (not included). If you have a problem with testing, please contact us, we will be happy to help you
• •Color Display: When using our gemstone testing equipment and diamond test identification tool, if the stone is a real diamond, a green indicator is displayed. The metal alarm function emits a continuous buzzing sound when the user accidentally touches metal instead of stone
• •Testing Notice: No matter what gemstone you are testing, the probe needle and the tested object should be at a 90° angle. When testing diamond, your right index finger should keep touching the metal panel on the back of the tester by using our diamond simulants detector and movable jewellery diamond test tool
• •Efficient Working: Portable design for fast, accurate and safe diamond test. The diamond torch jewelry diamond tester and thermal conductivity meter are simple and precise thanks to lossless testing. The gemstone appraisal tool for jewelers and diamond testers with LED display are lightweight, compact and easy to carry
• •Wide Application: The jewelry diamond tester pen and thermal conductivity tester for diamonds are not only a diamond tester, but also a gemstone tester. Our test equipment set with gemstone and professional diamond selector can detect whether a gemstone is real or fake, including: diamond, sapphire, ruby, crystal, agate, jadeite and other gemstones of various sizes