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Presidium Refractive Index Meter II

2.00 LBS
  • Product Description

    Separates diamonds, moissanites and gemstones via its Refractive Index in seconds!

    By accurately measuring the quantity of light reflected through the stone,  Presidium Refractive Index Meter II (PRIM II) is able to separate diamonds,  moissanites and other colored gemstones via its Refractive Index (RI) on flat  surfaces of polished gemstones.

    Unlike a traditional refractometer, PRIM II is able to measure the range of  RI value from 1.000 to ~3.000, therefore covering the commonly known gemstones  in the market, including diamonds and moissanites. In addition, a fast and easy  test can be done, without the inconvenience and messy usage of RI liquid.

    The new software enables the user to further eliminate the list of possible  colored gemstones by entering known values such as color, hardness and S.G.  value. Further information regarding gemstone properties, common found locations  can also be easily found.


    PRIM II Software:    


    An enhancement to enable users to further eliminate the list of possible colored gemstones by entering known values such as color, hardness and S.G. value.


    Powered up by USB



     Gemstone Dictionary:    


    Contains 57 gemstones' properties (R.I, Color, Hardness, S.G.   Value), country of origin and related information


    Serves as a quick and easy reference guide


    Refractive Index Reference Chart:    

       Refractive Index List for the common gemstones in the market


    Direct RI display panel:    


    Instantly displays the RI value of the stone


      Identifies diamonds, moissanites, and gemstones instantly
      Continual elimination of the possible gemstones through values such as via R.I., Color, Hardness and S.G.
      Tests on transparent gemstones, with flat polished surface
      Ideal for separation of gemstones
      Speed up on the identification of gemstones in parcel
      RI liquid not required
      Consistent and reliable results every time
      Clear and visible display for ease of reading measurements
      Light and compact tester that can be used anywhere

    Power and Battery:  

    9V batteries (up to 3 hours of continuous use based on alkaline batteries) / USB powered
    AC adaptor (optional item provided by Presidium)

    Technical Specifications:  

    Weight: 140g (0.50lb)
    Visual Signals: Refractive Index (R.I.) value
    Operating temperature: 18°C-27°C (65°F-80°F)

    Package Contents:  

    Presidium Refractive Index Meter II
    PRIM II CD-Rom (for PC only, no Mac)
    Protective carrying case
    User handbook
    1 year factory Warranty

    Dimensions and Weight:  

    Length: 140mm (5.5 inches)
    Width: 80mm (3.15 inches)
    Height: 33mm (1.3 inches)
    Weight: 140g (0.50lb)

    This product typically ships within 1 business day.


  • Product Reviews


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    1. thank you for making it so easy to identify gemstones,but it wont show 1.37?

      excellent machine on Dec 10th 2019

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