Connect with us

Headlines

They Looked Inside This Diamond and Found the Strangest Thing

mm

Published

on

Scientists find it ‘puzzling.’INSTORE PinkDiamond

This 0.26 ct pink synthetic diamond contains the first H4 defect GIA has observed in a CVD synthetic diamond. Photo by Robison McMurtry.

Diamond experts at the Gemological Institute of America aren’t sure what to think about a synthetic pink diamond they recently examined.

They found a defect, called H4, that is normally only seen in natural diamonds.

In fact, this was “the first observation of this defect in a CVD synthetic diamond,” according to a report by the GIA’s Troy Ardon, staff gemologist, and Christopher M. Breeding, senior research scientist and manager.

They note that diamond consists of a relatively simple lattice of carbon atoms wherein only a few impurities can substitute into the structure. The H4 defect consists of four nitrogen atoms and two vacancies.

This defect “is often seen in irradiated and annealed diamonds with suitable amounts of B-form nitrogen, and is a mature aggregate of nitrogen that is very difficult to achieve in synthetic diamond growth or even post-growth treatment,” they explain.

Advertisement

They’re not sure how such a defect could have occurred in the 0.26-carat round brilliant pink diamond submitted for grading at GIA’s Carlsbad laboratory. It was grown by chemical vapor deposition.

Ardon and Breeding say it’s possible the H4 was created during the irradiation and annealing process. But all in all, they find the presence of the defect “puzzling.” 

Read more at GIA

Advertisement

SPONSORED VIDEO

Moving Up — Not Out — with Wilkerson

Trish Parks has always wanted to be in the jewelry business and that passion has fueled her success. The original Corinth Jewelers opened in the Mississippi town of the same name in 2007. This year, Parks moved her business from its original strip mall location to a 10,000-square foot standalone store. To make room for fresh, new merchandise, she asked Wilkerson to organize a moving sale. “What I remember most about the sale is the outpouring excitement and appreciation from our customers,” says Parks. Would she recommend Wilkerson to other jewelers? “I would recommend Wilkerson because they came in, did what they were supposed to and made us all comfortable. And we met our goals.”

Promoted Headlines

Most Popular