Report: Toxic Leak from Angola Diamond Mine Kills 12, Sickens Thousands
Officials from the neighboring DRC will seek compensation for the pollution they say has turned tributaries red and affected millions.
In August, researchers from the Democratic Republic of the Congo’s Kinshasa University reported that a leak of heavy metals from a mine in neighboring Angola was causing an “unprecedented environmental catastrophe,” Reuters reported.
According to the Congolese researchers, the pollution turned two tributaries of the Congo River—the Tshikapa and the Kasai—red, killed fish, and affected millions of people who live along their banks.
Officials in the DRC said they attribute the pollution to a leak from the Catoca diamond mine in neighboring Angola and have linked it to 12 deaths and the illnesses of more than 4,500 people.
Sociedade Mineira de Catoca (Catoca Mining Company), which operates the Catoca mine, released a statement saying tailings from its mine had leaked into nearby water sources in late July, filling the water with sediment before it could seal a rupture in the spillway, but claimed the leakage contained sand and clay, not toxic materials.
Catoca, a joint venture between Angolan state diamond company Endiama and Russian diamond mining company Alrosa, is the fourth largest open-pit mine in the world and the largest in Angola, responsible for producing more than 75 percent of the country’s diamonds.
Eve Bazaiba, DRC’s minister of environment, said she will seek compensation in accordance with the “polluter pays” principle, meaning those who cause the pollution should take on the cost of fixing any damage, The New York Times reported.
The amount DRC officials are seeking has not yet been released.
The Times story also noted that while Bazaiba said the Angolan government and Catoca have acknowledged the pollution came from the diamond mine, other sources contend that isn’t the case and that Catoca has yet to confirm the allegations of a toxic spill.
Investigations into the exact cause of the incident are ongoing.
The Angolan government has not yet made a public statement about the incident, and Endiama did not respond to an email inquiry for comment from National Jeweler by press time.
Alrosa sent the following statement: “Alrosa has offered support and expertise to remedy the consequences of the spill at Catoca. As a responsible minority shareholder of Catoca, Alrosa is committed to bringing more transparency.”
The Latest

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.

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

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.

Sponsored by De Beers Group

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

The classic 5600 series G-Shock has been scaled down to about a tenth of its size, becoming a fully functioning watch ring.

The association’s annual conference and gala will take place Feb. 4, 2026, during the Tucson gem shows.

The January show will include a workshop for jewelry retailers on implementing AI to strengthen their businesses.

Fellow musician Maxx Morando proposed to the star with a chunky, cushion-cut diamond ring designed by Jacquie Aiche.

The retailer, which sells billions in fine jewelry and watches, is suing the Trump administration and U.S. Customs and Border Patrol.

Black Friday is still the most popular shopping day over the five-day holiday weekend, as per the National Retail Federation’s survey.

The historic egg, crafted for Russia's ruling family prior to the revolution, was the star of Christie’s recent auction of works by Fabergé.

The retailer offered more fashion jewelry priced under $1,000, including lab-grown diamond and men’s jewelry.

The eau de parfum is held in a fluted glass bottle that mirrors the decor of the brand’s atelier, and its cap is a nod to its “Sloan” ring.

In addition, a slate of new officers and trustees were appointed to the board.

Witt’s Jewelry in Wayne, Nebraska, is the organization’s new milestone member.

The man, who has a criminal history, is suspected of being the fourth member of the four-man crew that carried out the heist.

The single-owner collection includes one of the largest offerings of Verdura jewels ever to appear at auction, said Christie’s.

Michael Helfer has taken the reins, bringing together two historic Chicago jewelry names.

The guide features all-new platinum designs for the holiday season by brands like Harwell Godfrey, Ritani, and Suna.

During its Q3 call, CEO Efraim Grinberg discussed the deal to lower tariffs on Swiss-made watches, watch market trends, and more.

Rosior’s high jewelry cocktail ring with orange sapphires and green diamonds is the perfect Thanksgiving accessory.

The “Embrace Your True Colors” campaign features jewels with a vibrant color palette and poetry by Grammy-nominated artist Aja Monet.

Luxury veteran Alejandro Cuellar has stepped into the role at the Italian fine jewelry brand.























