Patent ID: 9546961
Date: 2017-01-17
CPC Classifications: G01J,G01N

Claim:
1. A method of rapid identification of natural and synthetic diamonds using a third-order Raman spectra, the method comprising steps of: providing a Raman analyzer operating with a laser power at 50 mW, a laser beam of wavelength 532 nm, and spectral collection time of 0.1 seconds at an average of 20 times, for an average detection of surfaces of diamonds; utilizing a large spot scanning probe for sample screening and obtaining wave number and intensity of the diamonds; the wave number and intensity being automatically corrected via a software and a background fluorescence being masked automatically; a spectral range of the Raman analyzer used for data acquisition set to be 100-4200 cm the spectrum being further normalized to identify treated samples with a third-order spectrum.