Gemmological Instruments

The most of gem stone as the optical crystallization has each unique optical characters and it should be identified and qualified by the observation of such optical characters through the optical measuring instrument such as refractometer, spectroscope and etc.

Gemmological Refractometer

In the various observation method of gem stone, the measurement of refractive index is the most reliable one for the identification of gem stone. Designed in compact, provided of shield cover to make measurement part to dark room and measured with day light. this instrument identifies gems accurately with apeed and ease at everywhere. Also, accessaried with polarizing filter, birefringence dispersion of gems can be observed and measured. Provided with wide measuring range of refractive index from nD 1.30 to 1.81, the most of gem stone can be observed and measured.

Gemmological Refractometer: 01Storage and carrying case
Gemmological Refractometer: 02Polarizing Filter, Contact Liquid
Gemmological Refractometer: 03
Gemmological Refractometer: 04
Gemmological Refractometer: 05
Gemmological Refractometer: 06Left: 160M, Right: 160LED
Model number Type List price
160M Standard type 65,000 yen (excl. tax)
160LED With Build-in LED lamp type 72,000 yen (excl. tax)
D-line monochromatic filter (591 nm) built in for No.160M
D-line LED (591 nm), with 3 pcs of button batteries (LR 44) built in for No.160LED

Gemmological Spectroscope (Prism Type)

The observation of the spectrum character presented by the gem stone is also one of the reliable method to identify and qualify it as the international standard. As same as above gemological refractometer it can be used with speed and ease at anywhere.

A-2: 01Storage and carrying case
A-2: 02A-2: 1
A-2: 03A-2: 2
D-3: 01Storage and carrying case
D-3: 02D-3: 1
D-3: 03D-3: 2
Model number Type List price
A-2 With adjustable slit 10,500 yen (excl. tax)
D-3 With adjustable slit and wavelength scale 28,000 yen (excl. tax)
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