Quick detection method and detection device of diamond luminescent spectrum

Abstract

The invention discloses a quick detection method and detection device of a diamond luminescent spectrum. The method includes the following steps that the surface of a diamond sample is irradiated by lasers with the wavelength of 405 nm; after the lasers irradiate features of lattice defects on the surface of the diamond sample, a photoluminescence phenomenon is generated, and the spectrum is formed; the spectrum is received by a spectrograph through an optical fiber mechanism and transmitted to a computer display screen; peak position feature spectrum charts of the corresponding lattice defects are displayed by the computer display screen according to different features of the diamond sample; according to the peak position features of the spectrum charts, it is confirmed that diamond is natural or synthesized; when the peak positions of the spectrum position are at the 415 nm position and the 741 nm position, it can be confirmed that the diamond is natural diamond; if the peak position of the spectrum position is at the 737 nm position and no 415 nm peak position exists, it can be confirmed that the diamond is synthesized through the chemical vapor deposition method; if the peak positions of the spectrum position are on the 883 nm position and the 884 nm position, it can be confirmed that the diamond is high-temperature high-pressure synthesized diamond. The method and device have the advantages that detection is easy, operation is convenient and distinguishing is accurate.

Description

technical field [0001] The invention relates to the technical field of gemstone detection, in particular to a rapid detection method and a detection device of a diamond luminescent spectrum. Background technique [0002] The mineral name for diamond is diamond. It belongs to the diamond family in mineralogy and is known as the king of gemstones. At present, synthetic technology is constantly innovating. There are three main ways to distinguish whether a diamond is natural or synthetic: [0003] First of all, Raman spectroscopy (Raman spectrum), is a kind of scattering spectrum. Raman spectroscopy is based on the Raman scattering effect discovered by Indian scientist C.V. Raman (Raman) in 1928. It analyzes the scattering spectrum different from the incident light frequency to obtain information on molecular vibration and rotation, and applies it to molecular structures. An analytical method of research. There are more than 2,000 foreign patents on Raman technology, most o...

AI Technical Summary

Problems solved by technology

[0008] Based on the above description, the existing technologies on the market are not suitable for easy, fast and efficient distinction between synthetic diamonds and natural diamonds

Images