Refractive Index Meter With Liquid ( RI Meter )

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 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 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.

• 1  x Gem Refractometer
• 1 x Polarizing  Filter
• 1 x Monochromatic  Light Filter
• 1 x Mini  Flashlight
• 1 x 1ml Refractive Fluid Oil
• 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 English Quick  Start Guide