Touch Instrument Tools

Gemological Gemology Gemstone Gem Refractometer TTG-181


Brief Description
Each gem has a typical refractive index due to its chemical composition and crystallization structure. The gem refractometer can be used to observe the optical properties and the structure of a gemstone. Through the parameters you can judge whether the gem is an anisotropic or isotropic stone. The stone needs a flat and polished facet. FULL SCALE Contact Liquid (RI Fluid) is also needed when testing.
This Gem refractometer is a compact refractometer with built-in LED illumination for the determination of the refractive index (RI), quality and categories of gemstones.
Wide Measuring range: 1.30 ~ 1.81 RI
High Accuracy: 0.01 RI
Built-in LED illumination
Polarizing filter
Accuracy: 0.01 RI
Illumination: Built-in LED illumination with on/off switch
Measuring range: 1.30 ~ 1.81 RI
Scale division: 0.01 RI
A bottle of 2 ml FULL SCALE refractive index (1.81 RI) oil (Not included)
Filter: Polarizing filter
Power source: 1 x CR2032 button cell battery (not included)
Item size: approx. 30 x 70 x 130 mm
Item weight: approx. 400g
One Set Included
1 x Gem Refractometer (main unit)
1 x instruction manua
Carrying pouch

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  • Model: TTG-181
  • Shipping Weight: 1lbs

This product was added to our catalog on Tuesday 06 September, 2016.

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