Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Spectroscope is an optical inst ent designed according to the principle of light refraction and color formation. Prism beamsplitters are characterized by: the resulting light area is not equidistant, the red area is small, the blue area is large; resolution is also small red area, blue area is large; light mission is good; Grating beamsplitter is characterized by: the light area is equidistant, red light resolution is greater than the straight prism beamsplitter; poor light mission, need to be irradiated with bright light. Material: Aluminum Color: As shown 1, the working principle (1) Different chromogenic elements including the common eight elements (Fe, Mn, Cu, Ti, V, Co, Ni) and some radioactive elements, rare earth elements (U, Th), etc., which have different selective absorption of part of the spect , and thus appear as perpendicular black bands or lines in the continuous spect , i.e., spectral discontinuity. (2) the use of spectroscopy can be decomposed into monochromatic white light, and thus the spectroscope can also be used to show the discontinuous absorption of white light by chromogenic elements. 2, the main purpose of the spectroscope and specific methods of use 1. Main uses A. To determine the cause of gemstone's color. B. As an auxiliary tool for identifying gemstones. C. To detect certain synthetic gems and optimized gems. To achieve the above purposes, it is necessary to be familiar with the spectral characteristics of typical gemstones. Package Contents: 1 x Small Diffraction Spectroscope Only the above package content, 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 +/