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

Thinking of Liquidating? Wilkerson’s Got You Covered

Bil Holehan, the manager of Julianna’s Fine Jewelry in Corte Madera, Calif., decided to go on to the next chapter of his life when the store’s owner and namesake told him she was set to retire. Before they left, Holehan says they decided to liquidate some of the store’s aging inventory. They chose Wilkerson for the sale. Why? “Friends had done their sales with Wilkerson and they were very satisfied,” says Holehan. He’d enthusiastically recommend Wilkerson to anyone looking to stage a liquidation or going-out-of-business sale. “There were no surprises,” he says. “They were very professional in their assessment of our store, what we could expect from the sale and they were very detailed in their projections. They were pretty much on the money.”

Promoted Headlines

Most Popular