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

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.

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.























