A ring set with “hogback” diamonds, an early stone cut dating to around the 16th century, sold for more than $20,000 at a U.K. auction.
Diamond Sales Down 33% in De Beers’ Latest Cycle
The diamond miner and marketer sold $390 million in rough to sightholders and via auction, compared with $581 million in the same period last year.

Gaborone, Botswana—De Beers sold $390 million in rough diamonds in its latest sales cycle, a 33 percent decline.
In a news release, CEO Bruce Cleaver blamed the double-digit drop on a “more challenging” retail environment in China and oversupply in the midstream while noting that demand in the United States remains “solid.”
But industry analyst Edahn Golan tweeted Tuesday that the decline in demand for diamonds was “global.”
De Beers as a bellwether for diamond jewelry sales: Not only that rough diamond sales by De Beers declined 33% last week, sales since the start of the year have fallen 18% in H1. This highlights a major decline in global diamond jewelry sales. pic.twitter.com/37Sy2kfYKP
— Edahn Golan (@edahn) June 25, 2019
De Beers’ most recent sales cycle was its fifth of the year, marking the halfway point of 2019.
To date, the diamond miner and marketer’s rough diamond sales have totaled $2.38 billion, down 18 percent year-over-year.
Here is a chart outlining De Beers’ sales so far in 2019.
2018 2019 First cycle $672 million $500 million Second $563 million $496 million Third $524 million $581 million Fourth $554 million $416 million Fifth $581 million $390 million (provisional) Sixth $533 million Seventh $503 million Eighth $482 million Ninth $442 million Tenth $544 million
Also this week, De Beers confirmed that it has changed the name of its grading lab from the International Institute of Diamond Grading & Research, or IIDGR, to the simpler De Beers Group Industry Services.
In an email to National Jeweler Wednesday, De Beers’ David Johnson said the renaming makes things “clearer and simpler” for customers and makes it obvious that IIDGR is part of De Beers.
It will provide the following products and services: diamond grading (natural, untreated diamonds only); proprietary lab-grown diamond detection equipment under De Beers Group Technology; melee, parcel and set diamond verification services; and a range of diamond education courses under De Beers Group Institute of Diamonds.
De Beers Group Institute of Diamonds has three campuses, in Maidenhead in the United Kingdom; in Antwerp, Belgium; and Surat, India.
De Beers Group Industry Services has offices at each campus, while De Beers Group Technology develops its detection equipment at the Maidenhead campus only.
The renaming of IIDGR is part of a broader rebranding the company mentioned when discussing “DTC diamonds” earlier this year.
The Latest

The rainbow version of the ring, our Piece of the Week, features angel-cut, octahedral lab-grown sapphires designed to be worn as armor.

The new initiative donates a portion of the proceeds from select charms to charitable causes.

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

The Brooklyn-based jeweler created a limited-edition version of its “Aura” eternity band, set with gemstones in the team’s colors.


Senior Editor Lenore Fedow headed to Savannah to learn more about the 10-year, $10 million partnership between JM and the art school.

Its new capsule jewelry collection features gold-finished stainless steel pieces designed for a maximalist look without a luxury price tag.

DCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.

The week-long event in Geneva is slated for April 2027.

Jewelers are missing out by not offering this one key add-on at the online point of sale, Emmanuel Raheb writes.

The fourth collaborative collection from the retailer and jewelry content creator focuses on gemstone charms and strands of colorful beads.

This year’s AGTA Spectrum & Cutting Edge Awards will feature two new categories.

The collection features traceable alexandrite from Brazil in calibrated sizes that is sorted by grade.

Dhaval Raja has been appointed to the role.

The capsule collection looks to vintage trunk pins that echo the spirit of speed, freedom, and the mythology of the American road trip.

SSEF issued a notice about the potential new source of the sought-after gemstone, citing “credible reports” from trade sources.

As Amazon Prime Day kicks off, Etsy is encouraging shoppers to support small businesses.

Cole Winward is the recipient of 2026 AGA Gemological Scholarship.

Whether they evoked nostalgia, wonder, or laughter, these jewels put a smile on our faces.

Scheduled for April 2027, Basilia will be the first watch and jewelry trade show held in Basel since the collapse of Baselworld in 2020.

Submissions for the milestone 25th annual Gem Awards will be accepted across three categories from now through July 31.

The beloved beagle dons his aviator outfit for the new Engineer Master II Snoopy Flying Ace timepiece.

The recent high jewelry auction, which also featured the sale of a 10-carat blue diamond, was “a celebration of color.”

She wore the “Le Cauri Endiamanté” earrings, our Piece of the Week, in the Obamas’ first dual portrait for the Obama Presidential Center.

Couture’s Michelle Orman joins Amanda Gizzi and Michelle Graff for this special post-Market Week episode of My Next Question.

The lab is seeing emeralds with filler added post-testing enter the market, accompanied by reports that indicate little to no treatment.

The third generation of the Stern family to head Patek Philippe, he navigated the “quartz crisis” and preserved the brand’s independence.






















