Set in a Tiffany & Co. necklace, it sold for $4.2 million, the highest price and price per carat paid for a Paraíba tourmaline at 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 jeweler’s “Deep Freeze” display showcases its iconic jewelry designs frozen in a vintage icebox.

Take luxury gifting to new heights this holiday season with the jeweler’s showstopping 12-carat sphene ring.

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

This year's theme is “Unveiling the Depths of the Ocean.”


In its annual report, Pinterest noted an increase in searches for brooches, heirloom jewelry, and ‘80s luxury.

Starting Jan. 1, customers can request the service for opal, peridot, and demantoid garnet.

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

The 111-year-old retailer celebrated the opening of its new location in Salem, New Hampshire, which is its third store in the state.

The new catalog features its most popular chains as well as new styles.

The filmmaker’s personal F.P. Journe “FFC” prototype was the star of Phillips’ recent record-setting watch auction in New York.

The new location in the Design District pays homage to Miami’s Art Deco heritage and its connection to the ocean.

Inflations, tariffs, and politics—including the government shutdown—were among consumers’ top concerns last month.

Silas Smith of Meridian Metalworks won the challenge with his pendant that blends Australian and American landscapes.

The sale of the 31.68-carat, sunset-hued stone was part of Sotheby’s first series of events and auctions in Abu Dhabi.

Most customers who walk into your store this month have made up their minds. Your job is to validate their choice, Emmanuel Raheb writes.

The collection features characters and motifs from Ukrainian folklore, including an enchanted mirror and a magic egg.

MatrixGold 3.11, the newest version of the jewelry design program, offers more flexibility, precision, and creative control.

The pavilion will be part of the 2026 JA New York Spring show, scheduled for March 15 to 17.

Kadet, a 1994 National Jeweler Retailer Hall of Fame inductee, helped grow the family-owned retailer in the Chicago area and beyond.

Billed as the world’s smallest wearable, Lumia Health’s new smart earrings have a health tracker subtly embedded in the back.

Don’t let those with December birthdays feel blue. Help them celebrate their month with blue zircon, turquoise, and tanzanite.

The new pink sapphire version of the piece dances with its wearer in the brand’s “Icons After Dark” holiday campaign.

A choice that’s generated a lot of commentary, Pantone says “Cloud Dancer” marks a fresh start and encourages relaxation and creativity.

The manufacturer’s holiday campaign features a gift guide filled with trending designs and jewelry that can be personalized.

The man was charged with theft, accused of ingesting the necklace while in a jewelry store in Auckland, New Zealand.

The Florida independent expanded its store from 8,000 to 14,000 square feet, fulfilling the vision of its late co-founder, Jim Dunn.




















