Connect with us

Press Releases

IGI Advanced Technology Decisively Identifies Lab Grown Fancy-Colored Diamonds from Natural Counterparts

“IGI uses the latest technology to ensure that each diamond is graded accurately and identified correctly as natural, or lab grown.”




(PRESS RELEASE) The International Gemological Institute (IGI), the world’s largest independent gemological laboratory, has been at the forefront of providing accurate and reliable certification services in the gem and jewelry industry for close to 50 years. Foreseeing the increase in demand for lab-grown diamonds in 2008, IGI was the first global laboratory to include certification for lab-grown diamonds that would help consumers make an informed decision when purchasing a diamond.

To keep transparency in the trade and consumers’ minds, IGI developed a machine based on photo luminescence, called the “IGI D-check”, for rapid screening to determine the source of creation – natural or lab-grown. Screening devices for natural and lab-grown diamonds commonly work on the principle of photoluminescence where they capture the signature fluorescence and phosphorescence exhibited by a diamond under Ultraviolet light of a shorter wavelength. However, fancy-colored diamonds do not behave in the same way as colorless and near-colorless diamonds. Lab-grown fancy-color diamonds are often treated with irradiation, heat and pressure (or a combination of the above) and these alter the fluorescence and phosphorescence. Most screening machines, therefore, cannot effectively separate between natural and lab-grown fancy-colored diamonds.

Raman Spectrometer at International Gemological Institute (IGI)

Raman Spectrometer at International Gemological Institute (IGI)

After extensive study, IGI established a common set of procedures for each color category. Using advanced techniques like FTIR and photoluminescence spectroscopy, along with magnification, IGI can successfully separate fancy-colored natural diamonds from fancy-colored lab-grown diamonds, whether loose, in parcels, or mounted in jewelry. The Institute has continuously evolved and shared its testing methods and techniques on a global level to ensure every diamond is accurately tested, whether submitted loose or mounted in jewelry.

FTIR (Fourier Transform Infra Red) Spectroscopy at International Gemological Institute (IGI)

FTIR (Fourier Transform Infra Red) Spectroscopy at International Gemological Institute (IGI)

“IGI uses the latest technology to ensure that each diamond is graded accurately and identified correctly as natural, or lab grown,” stated Mr. Tehmasp Printer, CEO of IGI. “With lab-grown fancy-colored diamonds gaining momentum and the differential pricing being substantial, it’s imperative that the screening is done by a reputed laboratory like IGI. We had a few cases in recent times where there has been a contamination of natural fancy-colored pink diamonds mixed with lab-grown pink diamonds. We strive to ensure that consumers have the right to accurate and authentic information about the diamonds they are purchasing.”


“IGI has developed the D-check in the interest of transparency and peace of mind for the industry and consumers alike,” continued Mr. Printer. “Our commitment to accuracy and transparency in the certification process is reflected in strict adherence and regular calibration of our international standards and testing methods across our worldwide locations. In addition to lab-grown certification services, IGI also provides comprehensive certification for loose diamonds, jewelry, and colored stones.”

To learn more about IGI and other offerings, visit here.



This Third-Generation Jeweler Was Ready for Retirement. He Called Wilkerson

Retirement is never easy, especially when it means the end to a business that was founded in 1884. But for Laura and Sam Sipe, it was time to put their own needs first. They decided to close J.C. Sipe Jewelers, one of Indianapolis’ most trusted names in fine jewelry, and call Wilkerson. “Laura and I decided the conditions were right,” says Sam. Wilkerson handled every detail in their going-out-of-business sale, from marketing to manning the sales floor. “The main goal was to sell our existing inventory that’s all paid for and turn that into cash for our retirement,” says Sam. “It’s been very, very productive.” Would they recommend Wilkerson to other jewelers who want to enjoy their golden years? Absolutely! “Call Wilkerson,” says Laura. “They can help you achieve your goals so you’ll be able to move into retirement comfortably.”

Promoted Headlines






INSTORE helps you become a better jeweler
with the biggest daily news headlines and useful tips.
(Mailed 5x per week.)


Latest Comments

Most Popular