GIA Evaluates its First Ring Carved From a Single Lab Diamond

The Gemological Institute of America (GIA) has evaluated its first ever ring cut from a single laboratory-grown diamond, it announced today. The 4.04 ct. solid diamond ring, which was cut from a single crystal, was submitted to the GIA New York laboratory for assessment.

The ring, produced by Dutch Diamond Technologies in collaboration with Belgian jewelry store Heursel, was cut from an 8.54 ct. laboratory-grown diamond plate created by chemical vapor deposition (CVD). The 3.03 mm thick band had an inner diameter of 16.35–16.40 mm and an outer diameter of 20.32–20.40 mm.

“Although this is not the first ‘ring’ of this type that has been reported, it is the first time GIA has evaluated a ring carved from a single laboratory-grown diamond,” said Tom Moses, executive vice president and chief laboratory and research officer at GIA, in a prepared statement. “As technology continues to evolve with man-made diamond growth, we expect to see more creative ways for this product to be used. New achievements will advance the bounds of what is possible with laboratory-grown diamond, in new applications in both jewelry and technology.”

The first known all-lab-diamond ring—the Project D ring by HRD Antwerp—was fashioned from a single 155 ct. plate of lab-grown diamond by Dutch Diamond Technologies. —Ruby Baybei

Top: The 4.04 ct ring fashioned from a single-crystal CVD laboratory-grown diamond (photo by Towfiq Ahmed)