The International Gemological Institute (IGI) has announced a major breakthrough in the identification of fancy-colored diamonds. Their new method allows for the accurate separation of natural diamonds from synthetic ones, a task that has posed challenges due to various treatments.
IGI’s innovative approach employs advanced techniques like Fourier transform infrared spectroscopy (FTIR) and photoluminescence spectroscopy. These methods, combined with meticulous magnification, enable the differentiation of diamonds across various color categories. Unlike traditional screening devices, which rely on fluorescence and phosphorescence under ultraviolet light, IGI’s method is effective even when diamonds have been subjected to treatments like irradiation, heat, and pressure, which can alter their optical properties.
This development is particularly crucial given the increasing popularity of lab-grown fancy-colored diamonds. The significant price disparity between natural and synthetic diamonds underscores the importance of accurate screening, especially in instances where both types may be present in the same inventory.
Tehmasp Printer, CEO of IGI, emphasized the necessity of relying on reputable laboratories for diamond screening. He noted past instances where natural fancy-colored pink diamonds were inadvertently mixed with lab-grown counterparts, highlighting the importance of accurate identification in maintaining integrity within the industry.
