Method and device for batch inspection of diamonds

Abstract

The invention discloses a method and device for batch inspection of diamonds. The diamonds to be inspected are placed on a working table. A Y type optical fiber comprises a light inlet, a light outlet and a lighting opening, wherein the light inlet of the Y type optical fiber is connected with a light source, the light outlet of the Y type optical fiber is connected with a spectrograph, and the lighting opening of the Y type optical fiber corresponds to the diamonds being inspected in position; a driving device is arranged between the lighting opening and the working table and can drive the lighting opening and the working table to move relatively, and the diamonds to be inspected on the working table are scanned and inspected one by one through the relative movement of the lighting opening. According to the device and method, the driving device is adopted for driving the lighting opening and the working table to move relatively, manual movement is not needed, and then inspection speed and stability are improved; a light extinction layer serves as the surface layer of the working table and can reduce background reflectance during inspection and improve inspection precision; full-spectrum analysis is adopted, so that identification precision is improved and synthetic diamonds and natural diamonds are effectively distinguished.

Description

technical field [0001] The invention relates to the field of diamond detection, in particular to a method and device for batch detection of diamonds. Background technique [0002] Existing man-made diamonds are usually polycrystalline diamonds that are aggregated from diamond crystals with a diameter of 10 to 30 nanometers. The molecular structure of man-made diamonds is not the complete octahedral structure of natural diamonds but a complex structure. [0003] The early man-made diamonds had a light syrupy color due to the nitrogen atoms in the air entering the diamond crystal. After scientists improved the production method, the man-made diamonds produced now have no difference in appearance from natural diamonds. Due to the different production environments, man-made diamonds The molecular structure of diamond is not the complete octahedral structure of natural diamonds but a complex structure, which will produce phosphorescence. [0004] Now, because of fair trade laws...

AI Technical Summary

Problems solved by technology

[0006] Existing inspections usually focus on large-grain gem-quality diamonds before they are processed and inlaid, and certificates are issued one by one, while tiny broken diamonds are usually tested after processing and inlaid; Due to the very small size and large background interference, general detection equipment cannot perform accurate detection

As a result, unscrupulous traders mixed artificial diamonds or fake diamonds into the rough diamonds for profiteering. After the processing and inlaying were completed, they were found to be mixed with artificial diamonds or fake diamonds, which caused both wholesalers and processors to suffer money and reputation damage. huge loss

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