It is designed for quick precise and safe diamond testing.
0 centimeters (W) x 19. Jeweler diamond tool kit Portable Diamond Tester 60X Illuminated Loupe Head-mounted magnifying glass Features LED light and audio result indication Accurate and reliable reading Metal alert Simple calibration for stones of various sizes Convenient carrying case Testing platform for loose stones Jeweler diamond tool kit Portable Diamond Tester 60X Illuminated Loupe Portable Diamond Tester Dimensions: 4.0 centimeters (H) x 6.