Diamonds & Gems

Purchased directly from Rio Tinto, the collection consists of pinks, purples and one red, none larger than 1.52 carats.
Latest in Diamonds & Gems

The lab issued a non-paper Diamond Dossier, the first of its reports to make the transition, earlier this week.

Strong jewelry sales and manufacturers’ desire to secure supply with known provenance pushed rough sales to their highest level since 2018.

Newcomers are Gary A. Roskin, Martin Fuller and Alberto Scarani.

Distinguishing natural diamonds from laboratory-grown stones – now more available than ever – has been difficult for jewelers. Until now.

In a Q&A, founder Geoff Dominy shares WGF’s plans for training a generation of gemologists in gem-producing countries in Africa.


The reports will state that IGI has verified the material as lab-grown moissanite and provide the stone’s weight and shape.
The Maryland-based company promoted interim President Mike Grunza to the role, succeeding Sue Rechner.

De Beers Institute of Diamonds provides the very best in diamond verification, education and diamond services.

Some sapphires gain orange or yellow coloration when exposed to incandescent light, according to a recent lab note.

Revere ran his own jewelry academy in San Francisco for 40 years.

Element Six develops and produces synthetic diamond and tungsten carbide supermaterials.

According to Russian news sources, the sanctioned head of the diamond company is leaving to take a job with an investment group.

Said to be the largest pink diamond found in hundreds of years, “The Lulo Rose” was sold for an undisclosed sum.

In the spirit of an advent calendar, “Gems to Help Ukraine” will sell a stone a day through Dec. 24 on the Nomad’s Instagram account.

The secure mark combines an overt mark with a covert data set to provide assurance on a gem.

Liqhobong has been in a care-and-maintenance period since the start of the pandemic.

The company announced the resignation of Peter Ravenscroft late last week, effective immediately.

Debuting today, it is open to Provenance Proof blockchain users.

The discoveries were outlined in the Lab Notes section of the fall 2022 issue of Gems & Gemology.

As in September, the company’s sales were up slightly year-over-year but down month-to-month.

Lake Dai, who teaches at Carnegie Mellon University, joins the board alongside Rosy Blue Managing Director Russell Mehta.

The limited-time deal is being offered to help jewelers through the busy holiday season.

The jewelry company is now selling lab-grown diamonds loose and set in engagement rings.

Set to roll out in early 2023, it will enable verification of up to 3,600 diamonds per hour for stones as small as 0.001 carats.

L.J. West Diamonds has collaborated with the Melbourne Museum to mount an exhibition of the rarest stones from the now-closed Argyle mine.

Antoine Borde joins Lightbox from French food company Danone Group, succeeding Steve Coe.
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