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Refractive Index is one of the most important optical parameters used to identify and authenticate polished precious and semi-precious gemstones. 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).Specification:Material: ABSName: RefractometerMeasuring Range : 1.30 - 1.81RIMinimum Graduation : (RI) 0.01RIScale Division : 0.01 nDFilter: Polarizing FilterSize: 113*32*61mm/4.45*1.3*2.4inWeight: 400gPower Source : 3 x AG13 1.5V button batteries(not include)Illumination : Internal Light Source with momentary/power switchFeatures:1.Unique design, extremely low power consumption, easy to carry.2.High-quality, high-precision measurement results.3.Through strict quality and safety standard test, long-term failure service life. 5.Comes with Automatic Temperature Compensation (ATC) that let itself adjust to the climatePackage List:1 x Refractometer1 x User Manual1 x Storage Box
Professional Function: Gemstone Refractometer is the most important and powerful tool for identifying and authenticating polished gemstones and semi-precious stones, as well as for observing the optical properties and structure of precious stones
Quick identification: Quickly and accurately identify single and double gems. Helps identify diamonds, moissanite and colored gems, speeds up the identification of gems in the package, does not require RI liquids, and results in uniform and reliable results each time, with a clearly visible display for easy reading measurements.
Measuring Range: Gem refractometer is a low-cost, lightweight measuring instrument used by jewelers and gem traders to measure polished gemstones with a refractive index ranging from 1.30 to 1.81 RI.
Easy to Carry: Size is about 113*32*61mm/4.45*1.3*2.4in. It is characterized by its compactness and lightness, and is very popular in the jewelry industry.
Satisfaction Guarantee: Refractometer is designed to measure the refractive index of gemstones and solid materials. If you have any questions about the product, do not hesitate to contact us or ask questions in QA, our will solve your problem as soon as possible
