Raster type Gemological Spectrometer is an instrument used in gemology to analyze the optical properties of gemstones. It uses a raster type scan to systematically examine a gemstone and collect data. Spectrometer is an instrument used in gemology to analyze the optical properties of gemstones. It uses a raster type scan to systematically examine a gemstone and collect data. It allows gemologists to obtain detailed information from gemstone samples, which aids in their evaluation and classification. HOW TO USE: When using a spectroscope to identify jewelry, keep your eyes close to the eyepiece. The effect can be visualized using a strong gas burner. 2 methods of use: USING REFLECTED LIGHT - this can be used for jewelry with a certain transparency. TRANSMITTED LIGHT - this can be used for jewelry with low transparency. Authenticity: the authenticity of your gemstones. Discover the science behind gemstone authentication and protect your investment. Gemological spectroscopes play a crucial role in gemstone analysis and provide gemologists with valuable information for gemstone identification, evaluation and research. The actual product may have a slight color difference or difference, which does not affect the use Color: Black Material: Aluminum Package Contents: 1 x Gemological Spectrometer 1 x Case Only the above package contents, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.