The highlight of a single-owner jewelry and watch collection, it’s estimated to fetch up to $7 million at auction this December.
The Company That Owns the Cullinan Mine Is Up for Sale
Petra Diamonds is looking for a buyer for some or all its assets.

London—Saddled with hundreds of millions of dollars in debt and facing a diamond market hobbled by COVID-19, miner Petra Diamonds has put itself up for sale.
The London-based company announced after market close Friday it is seeking a buyer for some or all its diamond mines.
Based in London, Petra Diamonds has a total of four operations: the Cullinan, Finsch and Koffiefontein mines in South Africa, and the open-pit Williamson, Tanzania’s only major diamond mine.
All four are former De Beers Group properties.
In operation since the early 1900s, Cullinan is known as a source of large Type IIa stones as well as blue diamonds and holds the distinction of producing the largest rough diamond ever recovered, the 3,106-carat Cullinan. (The mine, originally called Premier, was later renamed Cullinan in homage to the famous diamond.)
Petra, which has $650 million in outstanding 7.25 percent senior secured notes due for repayment in May 2022, began a strategic review in late March.
The company had problems prior to the spread of coronavirus, including weak diamond prices, troubles with its Williamson mine in Tanzania, and the debt incurred building a new processing plant at Cullinan and taking the Finsch mine underground.
The pandemic exacerbated its issues, dampening demand and causing prices to drop at its March sale.
In April, the company put Williamson on care and maintenance, citing “the unprecedented depressed market environment.”
The following month, the company reported sales were down 17 percent in its fiscal year-to-date due to weaker prices and lower sales in the March tender.
Petra said any companies with interest in buying some or all its mines should contact its advisors at Rothschild & Co., Giles Douglas (giles.douglas@rothschildandco.com) or Muhammad Jaffer (muhammad.jaffer@rothschildandco.com).
The Latest

CEO Efraim Grinberg noted a resurgence in the fashion watch market.

The “Bullseye” necklace, with vintage bakelite and peridot, August’s birthstone, is the perfect transitional piece as summer turns to fall.

Jewelers of America is leading the charge to protect the industry amidst rising economic threats.

Sponsored by Clientbook


It will classify lab-grown stones into one of two categories, “premium” or “standard,” in lieu of giving specific color and clarity grades.

Former Free People buyer Afton Robertson-Kanne recently joined the retailer.

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

The jeweler teamed up with two local organizations for its inaugural “Back to School and Bling” event.

The singer’s new bling, reportedly a natural old mine-cut diamond, is no paper ring.

Plans for dining out, booking vacations, and buying big-ticket items were down.

The “Play” collection centers on nostalgic toys that have kinetic elements to carry playfulness and wonder into adulthood.

Designer Christina Puchi, the creative force behind CCWW Designs, has created charms and pendants based on iconic candies and crackers.

The Jonas Brothers star showed off new timepieces against the backdrop of his favorite spots in his home state of New Jersey.

The family-owned jeweler in Fayetteville, North Carolina, is in the hands of the second generation.

In his latest column, Emmanuel Raheb shares tips for encouraging customers to treat themselves to new jewelry.

The new stand-alone Rolex boutique is housed in the former Odd Fellows Hall, a landmark built in 1897.

The Brilliant Earth ambassador co-designed a diamond medallion featuring meaningful symbols.

Wrap jewelry is more than just a trend; it’s the perfect motif for the coming season of layering, scarves, and pumpkin spice.

The three-day watch collector show, coming this October, will feature 44 exhibiting brands, as well as a new dinner experience.

Sriram “Ram” Natarajan is now GIA’s senior vice president of laboratory operations and is based out of the lab’s headquarters in Carlsbad.

The one-of-a-kind collar represents the beauty of imperfection and the strength to rebuild.

Three C-suite executives, including former CEO Tom Nolan, have resigned as part of what the company describes as a “transition.”

The retailer, which recently filed Chapter 11, inked a deal to sell its North American business and intellectual property.

Target CEO Brian Cornell will step down in February and be replaced by the company’s chief operating officer, Michael Fiddelke.

The group met with the president's senior trade advisor earlier this week to express the industry’s concerns about the effects of tariffs.

The pop-up will display this year's Tiffany & Co. Singles Championship trophies along with a diamond-encrusted tennis racket and ball.