KooingTech Diamond Tester, Jewelry Refractometer RHG181 1.30-1.81

KooingTech Diamond Tester, Jewelry Refractometer RHG181 1.30-1.81

• Product Parameters: Diamond tester size: approx. 13*6*3.5 cm/5.1*2.4*1.4 inches; Refractive index range: 1.30-1.81 RI; Weight: approx. 721 g; The gem tester is lightweight, compact and easy to carry
• Function: Jewelry refractometer can quickly and accurately measure the refractive index value of jewelry without damage, and can determine other optical characteristics of jewelry, is one of the most important tools to identify jewelry
• Instructions for Use: Wipe the gemstone and refractometer, apply the refraction oil on the surface of the prism, cover the gemstone flat on the surface of the prism, turn on the light source, adjust the focal length of the eyepiece, and start to observe
• Professional Manufacturing: The diamond tester is made of ABS material, which can be used for the gem is uniaxial crystal or biaxial crystal, low power consumption, and provide effective service while ensuring long term use
• Widely Used: The gem tester is suitable for measuring the refractive index of ruby, sapphire, emerald, emerald, tourmaline, crystal, diamond, zircon and other gems and solid materials