• 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

The RHG181 Diamond Tester is a portable gem tester designed for jewelry professionals in the United States. With a compact size of 8.66 x 4.33 x 3.15 inches and a weight of 1.3 pounds, this refractometer is ideal for testing diamond and gemstone quality. Its advanced technology allows for accurate readings of the refractive index, ensuring the authenticity and value of jewelry pieces. This tool is essential for jewelry care, design, and repair, making it a valuable addition to any professional's toolkit.