SPECTROSCOPES, Gem identification, Gemological tool, Made in Japan

SPECTROSCOPE (DIRECT VISION)
item code:103-004
Weight / Dimensions = 93 g / 89 x 21 x 21 mm

SPECTROSCOPE (WAVELENGTH SCALE)
item code:103-005
Weight / Dimensions = 225 g / 104 x 50 x 22 mm

Spectroscopes measure the characteristic spectrum through principle ingredients and coloration elements contained in the gemstone. It is the device to differentiate the type of gem.
Made in Japan

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