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.
- 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 Refractometer Index Reference List (For 77 common gemstones, i.e. Calcite, Jadeite, Quartz etc.)
- 1 x Quick Start Guide