Generic Gemological Refractometer

Refractive Index is one of the most important optical parameters used to identify and authenticate polished precious and semi-precious gemstones. This 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 instrument can also be used to identify whether a particular stone is Isotropic or Anistropic (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 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

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 Quick Start Guide