Professional Gem Refractometer Identification 30 ~ 1.81RI Monochromatic Light Filter

Product Description

   Refractive  Index is one of the most important optical parameters  used to identify and authenticate polished precious  and semi-precious gemstones. This Gem Gemological refractometer  is a low cost, lightweight measuring instrument used  by jewelers and traders of gemstones   to measure polished stones over a refractive index  range of 1.30 to 1.81 RI. The Gem testing instrument can also  be used to identify whether a particular stone is Isotropic  or Anistropic (uniaxial or biaxial).

Gemological  (Gemstone) Refractometer Detector is your primary and most powerful  tool in gemstone identification. As with a typical critical  angle refractometer, it will measure the Refractive  Index of faceted stones.



Features: 

  • Can  identify singly & doubly gemstones quickly  and accurately
  • Uniquely  designed, low battery consumption and portable
  • Approved  by strict quality and safety standards for long  and trouble-free life
  • Guaranteed  high quality and accurate testing results
  • Brand  new and unused

  

Specifications:

  • Measuring  Range: 1.30 – 1.81 RI
  • Minimum  Graduation Value: 0.01 RI
  • Dimension:  30 x 70 x 130mm
  • Weight:  400g