School Diffraction Gemological Spectroscope With Adjustable Focus
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                                            .... Materials can absorb parts of the electromagnetic spectrum, and when the absorbed parts fall within the visible range, that absorbed part will influence the color of the material. When a gemstone is observed with a spectroscope, the absorbed parts...                                         
                                            Shenzhen Fable Jewellery Technology Co., Ltd.
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Gem Test Kit Jewelry Microscope Handheld Polariscope A24.6356
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                                            ...Gemological Lab Special For Students And Gemologists A24.6356 Gem Test Kit A24.6356-A Travel Lab A24.6356-B Gemological Lab A24.6321-A Handheld Refractometer A24.6321-B Handheld Refractometer Handheld Polariscope Handheld Spectroscope Handheld Spectroscope (Adjustable) Iceland Spar ......                                         
                                            Opto-Edu (Beijing) Co., Ltd.
                                         
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USB3.0 FS-2A Full Spectrum Hyperspectral Camera
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                                            The FigSpec® series adopts a high-diffraction-efficiency transmission grating spectroscopic module combined with a high-sensitivity area array camera, integrated with built-in push-broom scanning and an auxiliary imaging camera. This design eliminates the ......                                         
                                            CHNSpec Technology (Zhejiang)Co.,Ltd
                                         
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