GSTK-94 Pocket Spectroscope Diffraction Grating Gemological Gem Stone Jeweller Gemology Gemologist

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Detect the absorption of spectra and it is used to view the color of a gemstone, either by shining a light (pen-torch) through the stone into the spectroscope if the stone is trans parent or by viewing its reflected light if the stone is opaque. Inside is a pattern of lines that you must learn to recognize, it is a spectrum (rainbow) of which might be interrupted by black or white lines. Specifications: Length : 55mm Diameter : 15mm Material : Aluminum (Durable) Inside Instruction : Raster type Set Includes: 1 x Medium Spectroscope Synthetic Leather Carry Pouch Show more