- Pinhole-sized light reflectivity measure on wide oval platform
- Cover cup with blackout interior to ensure light reflectivity measure is accurate
- Instantly displays direct R.I reading on digital index LED display panel
- In-built Refractive Chart for referencing diamonds and simulants above R.I reading of 1.8
- In-built 8-piece gemstone holder
- Pocket-sized Refractive Index Chart pull-out with R.I readings for 55 stones
- PRIM II complementary software to help users find out the possible colored gemstone using data on various gemstone properties
- Gemstone Dictionary in software with 57 gemstones’ properties (R.I, Color, Hardness, S.G. Value), country of origin and related information
- USB port for alternative power source and connectivity
- Estimates diamonds, moissanites and gemstones’ R.I instantly, thereby allowing identification of possible stones
- Able to test wide range of R.I values from 1.000 – 3.000, more than traditional refractometer
- No need for messy R.I liquids
- Tests on transparent gemstones, with flat polished surfaces
- Continual elimination of possible gemstones via software program through input of known values such as R.I, color, hardness and S.G.
- Ideal for separation of gemstones
- Clear and visible display for ease of reading results
- No waiting time between tests
- Simple and easy to use
- Light and compact tester
- Runs on batteries or with recommended Presidium AC adaptor