Sachi Gem Refractometer is a low-cost lightweight measuring instrument used by jewellers and traders of gemstones to measure polished stones over a refractive index range of 1.30 to 1.81 RI. The instrument can also be used to identify whether a particular stone is Isotropic or Anisotropic (uniaxial or biaxial). Gemological (Gemstone) Refractometer 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 refractive gemstones quickly and accurately.
Uniquely designed low battery consumption and portable.
Approved by strict quality and safety standards for a long and trouble-free life
Guaranteed, high quality and accurate testing results
Specifications:
Measuring Range: 1.30 - 1.81 RI Minimum G
Radiation Value: 0.01 RI
Dimension: 30 x 70 x 130mm
Weight: 400g
Set Includes:
1 x Gem Refractometer
1 x Polarizing Filter
1 x Monochromatic Light Filter
1 x Mini Flashlight
1 x 1.5V AAA Battery
1 x Storage Box
1 x Refractometer
1 x 2ml Vial 1.790 Refractive Index Oil