After eight years, Gilbertson is leaving his post at the mining company, which is currently facing a slew of operational challenges.
For new campaign, Gemfields roughs it
Gemfields has a new advertising campaign and emerald-focused tome, and the colored gemstone miner celebrated both amid the snow Monday at the St. Regis Hotel in New York City.

Shot by portrait photographer Peter Lindbergh, the advertising campaign is the second for the London-based mining company, which mines emeralds and amethysts in Zambia along with rubies in Mozambique. The company has said it will hold its first ruby auction this year.
As the first did, the ad campaign features actress and Gemfields ambassador Mila Kunis, who was in attendance at Monday night’s fête.
The mining company announced Kunis as its ambassador in early 2013, and the actress, who got her start on That 70s Show, voices Meg on Family Guy and won a Golden Globe for Black Swan, traveled to Gemfields’ emerald mine in Zambia later that year.
The theme of the new campaign, a follow-up to the first that featured Kunis in finished, polished gemstone jewelry, is “Beauty by nature.” It was shot in black and white, with the actress wearing no makeup and images of rough emeralds, rubies and amethysts superimposed on the edges.
A London-based mining company with operations in Africa, Gemfields has said publicly that its goal is to become, essentially, the De Beers of emeralds: create a stable market for the colored gemstone and enhance its image worldwide.
The miner, however, ran into a roadblock in 2013 when issues with the Zambian government resulted in Gemfields not holding any auctions of rough emeralds outside the country as planned. This caused the mining company to hold one less auction in 2013 and, ultimately, to see a drop in both sales and profits for the year.
Gemfields next emerald auction is scheduled for Feb. 21 to 25 in Lusaka, Zambia. It was not immediately clear if the mining company would be holding all its auctions in Zambia going forward.
In addition to its new advertising campaign, Gemfields on Monday also marked the release of a hardcover coffee-table book, simply titled Emerald. It was authored by jewelry expert Joanna Hardy and writer Jonathan Self, with a preface by Vogue Italia Editor Franca Sozzani and introduction by British author Hettie Judah.
On the book’s cover is a suite of emerald jewelry owned by Mary-Louise, Archduchess of Austria, the second wife of Napoleon I.
The 272-page book, which retails for $125 and is available wherever
The gemologist took the class back to ancient Egypt, where the emeralds were mined in what later came to be called Cleopatra’s Mines--after the famous Queen of the Nile who loved her gemstones-- and then to Colombia.
The South American country is known for producing the finest emeralds in the world in terms of color and remains the world’s top producer of the gemstone today. According to Hardy’s presentation, 38 percent of emeralds come from Colombia, 29 percent from Zambia, where Gemfields mines, 23 percent from Brazil and 10 percent from other countries.
Hardy also gave a brief overview of the mineral composition of emeralds during her presentation.
A variety of beryl, emeralds are beryllium aluminum silicate, with chromium, vanadium and iron coming together in varying levels to give them their green hue. They rank 7.5 on the Mohs scale of mineral hardness, below corundum (rubies, sapphires, etc.) at 9, and the hardest substance on earth, diamond, which is 10.
Editor's note: This story was updated to include information from Gemfields about their emerald auctions.
The Latest

The new location is set to open this winter, featuring the retailer’s first rotating jewelry designer residency.

The pop artist appears in the latest campaign for the “Laurence Graff Signature” collection.

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

One-of-a-kind pearls take the shape of ice cream cones, frogs, submarines, and other imaginative charms.


Charlotte Rose said her election is “a sign that this is an industry capable of change.”

Sponsored by Rio Grande Jewelry Supply

DCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.

The American jewelry house, founded by Latvian immigrants, has been creating American flag brooches since 1917.

The artwork celebrates the Atlanta jeweler’s legacy and symbolizes its commitment to supporting local artists and its community.

Its team can evaluate jewelry and watches, as well as luxury handbags, artwork, and collectibles.

Falling oil prices were a factor in the slight month-over-month improvement.

The new offering comprises more than 120 bridal and engagement ring styles with natural and lab-grown diamonds.

The clock is part of the celebration for the soon-to-open Rolex headquarters on New York City’s Fifth Avenue.

The public relations professional is remembered for her benevolent generosity and unwavering commitment to those around her.

The new watch commemorates Pokémon’s 30th anniversary.

The luxury retailer is now called Exemplar Luxury Group.

The “Lady” collection is a new take on old beauty standards with gemstone-adorned hair pins and combs, a compact mirror necklace, and more.

The new line is included in the e-tailer’s curation of jewelry celebrating America’s 250th anniversary.

All active members who earned their credential or designation before Dec. 1, 2025, are required to recertify.

The new jewelry collection uses a colorful palette of onyx, malachite, tiger’s eye, mother-of-pearl, lapis, turquoise, and coral.

Lee Michaels Fine Jewelry is celebrating 30 years in the Ridgeland, Mississippi community.

Sean Milliner has joined the company.

Classes will begin in August at GIA’s new Canary Wharf location.

A ring set with “hogback” diamonds, an early stone cut dating to around the 16th century, sold for more than $20,000 at a U.K. auction.

The rainbow version of the ring, our Piece of the Week, features angel-cut, octahedral lab-grown sapphires designed to be worn as armor.

The new initiative donates a portion of the proceeds from select charms to charitable causes.



















