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Presidium Portable Refractive Index Meter II (PRIM II) - TR611

Brand: Presidium

Subtotal: £264.95 Price: £264.95 + VAT if applicable
Quantity discounts 1 (£264.95) 2+ (£251.70) 10+ (£238.46)

SKU: TR611 Packaged weight: 0.15kg
Desktop digital tester that uses refractive index to quickly separate gemstones, diamonds, moissanites and other diamond simulants.
By measuring the quantity of light reflected through the stone, the Presidium Refractive Index Meter II (PRIM II) is able to separate diamonds, moissanites and other coloured gemstones via the Refractive Index (R.I) of these polished gemstones.
Unlike a traditional refractometer that has a limited range of R.I measurements and thus cannot be easily used to measure R.I of certain gemstones, the PRIM II is able to measure a wider range of R.I value from 1.000 to ~3.000, therefore covering the commonly known gemstones in the market and can also measure RI of diamonds, moissanites and other diamond simulants such as high zircon, strontium titanite, etc. In addition, a fast and clean test can be easily done with the PRIM II, without the inconvenience and messiness of R.I liquid used in the traditional refractometer.
The PRIM II also features new software that provides a database of more than 50 gemstones with their various properties and possible origins, and a program that enables the user to enter known properties of the gemstone such as colour, S.G. value, hardness, etc to ascertain what possible gemstone it is from the database information. (Available to download)
PRIM II Software - An enhancement to enable users to further eliminate the list of possible coloured gemstones by entering known values such as colour, hardness and S.G. value. Available to download.
Powered up by USB
Gemstone Dictionary
Contains 57 gemstone properties (R.I, Colour, 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., Colour, Hardness and S.G. (Specific Gravity)
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 battery (up to 3 hours of continuous use based on alkaline batteries) (not included)
USB powered (lead included)
Operating Conditions
Optimal Operating Temperature: 18°C – 27°C (65°F – 80°F)
Storage Temperature: 10°C – 51°C (50°F – 124°F)


Download PRIM II Software User Guide

Download PRIM II Software

Download PRIM II Refractive Index Chart