The International Gemological Institute (IGI) has introduced a new technology aimed at accurately distinguishing between lab-grown and natural fancy-colored diamonds. Traditional methods for differentiating diamonds, primarily focused on colorless stones, have relied on photoluminescence to detect the source of the diamond. However, these techniques prove ineffective for fancy-colored diamonds, which may undergo treatments like irradiation, heat, and pressure, altering their fluorescence and phosphorescence. To address this, IGI has conducted extensive research to establish a set of procedures specific to each color category of diamonds.Advanced Identification TechniquesUtilizing Fourier-transform infrared spectroscopy (FTIR) and photoluminescence spectroscopy, combined with magnification, IGI’s new screening process can accurately…

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