It is located in Marin County, California.
Cullinan Mine Produces 20-Carat Blue Diamond
The South African diamond mining site is responsible for the largest rough diamond ever recovered.
London—Petra Diamonds Ltd. just announced the recovery of a large blue diamond.
The diamond miner said Monday that it dug up an “exceptional” 20.08-carat Type IIb gem-quality blue at the famed Cullinan mine.
In its lifetime, the Cullinan mine has produced many large, high-quality white diamonds, as well as a number of blues.
It produced the largest gem-quality rough diamond on record, the 3,106-carat Cullinan Diamond, discovered in 1905.
In April, a 425.10-carat gem-quality white diamondwas recovered from the mine.
In a statement, Petra said of its 20.08-carat blue diamond discovery: “Today’s recovery not only demonstrates the quality of Petra’s asset base, as the Cullinan diamond mine remains a significant source of rare blue diamonds, but it again confirms the prevalence of exceptional stones in the Cullinan orebody as well as the ability of the mine’s plant to recover the full spectrum of diamonds.”
In addition to Cullinan, Petra has two other diamond mines in South Africa, Finsch and Koffiefontein.
De Beers previously owned all three mines.
The Latest
Concerns about rising prices, politics, and global conflicts continue to dampen consumer outlook.
May’s birthstone is beloved for its rich green hue and its versatility.
Meet Ben Claus—grand prize winner of For the Love of Jewelers 2023 Fall Design Challenge.
Last month in Dallas, David Walton pushed another jeweler, David Ettinger, who later died.
The “Tiffany Céleste” collection reimagines designer Jean Schlumberger’s interpretations of the universe.
The brand also created a 100-carat lab-grown diamond necklace in honor of its centennial.
With Ho Brothers, you can unlock your brand's true potential and offer customers the personalized jewelry experiences they desire.
Tim Schlick has been promoted from his previous position as COO.
It’s the second year for the event, slated to take place in October in Toronto.
Supplier Spotlight Sponsored by GIA
“SIS x MISA Denim and Diamonds” is a collaboration between the designer and celebrity stylist Misa Hylton.
The retailer is moving to a newly designed space in the same shopping center.
Gifts that are unique and thoughtful are top of mind this year, according to the annual survey.
The necklace is featured in the brand’s “Rebel Heart” campaign starring Adam Levine and Behati Prinsloo.
The two organizations will host a joint event, “Converge,” in September 2025.
Big changes appear to be on the horizon for the diamond miner and its parent company, Anglo American.
Padis succeeds Lisa Bridge, marking the first time the organization has had two women board presidents in a row.
Jesse Cole, founder of Fans First Entertainment, shared the “five Es” of building a fan base during his AGS Conclave keynote.
The Royal Oak Perpetual Calendar "John Mayer" was celebrated at a star-studded party in LA last week.
The announcement came as the company reported a 23 percent drop in production in Q1.
The three-time Pro Bowler continues to partner with the retailer, donating to a Detroit nonprofit and giving watches to fans.
A double-digit drop in the number of in-store crimes was offset by a jump in off-premises attacks, JSA’s 2023 crime report shows.
Inspired by the Roman goddess of love, the designer looked to the sea for her new collection.
The luxury titan posted declining sales, weighed down by Gucci’s poor performance.
The selected nine organizations have outlined their plans for the funds.
The mining company’s Diavik Diamond Mine lost four employees in a plane crash in January.