Also, a federal judge has ordered that companies that paid tariffs implemented under the IEEPA are entitled to refunds.
LA Museum Going Green with Diamonds This Winter
The Natural History Museum of Los Angeles County will open an exhibition featuring more than 60 rare green diamonds on Saturday.

Los Angeles--The Natural History Museum of Los Angeles County is going green in a big way.
On Saturday, the museum will open a new exhibition called “Green Diamonds: Natural Radiance,” adding eight cases of the green gems to its Gem and Mineral Hall.
The loose and set diamonds come as part of the Gamma Collection, which is on loan from Optimum Diamonds LLC and was assembled over a period of about 15 years. Gamma is comprised of more than 60 of the rarest and most prestigious natural colored diamonds in the world, according to the museum.
The collection showcases a variety of shapes, cuts and shades of the color spectrum.
The highlight of the exhibition is “The Mantis,” the largest vivid yellowish-green diamond ever graded by the Gemological Institute of America at 4.17 carats, as well as “The Shangri-La,” a large vivid green diamond weighing 3.88 carats. Both are mounted in rings.
There also is “The Light of Erasmus,” an extremely rare 1.63-carat vivid greenish-blue diamond.
In addition to seeing the diamonds, the exhibition also will give museum visitors the opportunity to learn about the formation of diamonds and scientific origins of the green color, including the gamma radiation that inspired the name of the collection.
The exhibition also will explore the unsolved mysteries behind “Chameleon” diamonds, which temporarily change color when exposed to light or heat. “Natural Radiance” will feature three of these stones, including a 3.08-carat dark gray greenish-yellow diamond.
The company will also exhibit two very rare diamonds Optimum Diamonds won at the 2017 Argyle Pink Diamonds Tender: the Argyle Everglow and the Argyle Liberté.
The collection will be on view at the museum from Dec. 9 through April 1, 2018.
Coinciding with the launch of the exhibition, the Los Angeles GIA Alumni Association and WJA Los Angelses are hosting the second annual “Night Among Gems” event at the museum on Wednesday, Dec. 13 from 6 to 9 p.m.
Attendees will get to see the stones as well as mingle with Associate Curator of Mineral Sciences Aaron Celestian.
Tickets can be purchased online.
The Latest

The ever-growing collection, which just expanded with the addition of Olga of Kyiv, features cameos of 12 women from history.

We asked a jewelry historian, designer, bridal director, and wedding expert what’s trending in engagement rings. Here’s what they said.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

The annual event will be held in Orlando, Florida, from Sept. 14-17.


The “Outlander” star modeled for the digital cover of the magazine’s spring issue, which features a story on her relationship with jewelry.

This year’s annual congress, which will mark the confederation’s 100th anniversary, will take place this fall in Italy.

With refreshed branding, a new website, updated courses, and a pathway for growth, DCA is dedicated to supporting retail staff development.

Beverly Hills was chosen as the location for the brand’s first store, designed as a “private residence for modern monarchs.”

Kering, Apple, and other retailers have reportedly temporarily closed stores in the Middle East region in light of the recent conflicts.

Beth Gerstein discusses the vibe of the new store, what customers want when fine jewelry shopping today, and the details of “Date Night.”

Nearly half of buyers are prioritizing silver and fashion collections this season, organizers said.

The “Live Now. Polish Later.” campaign features equestrians wearing the brand’s jewels while galloping across the icy plains of Kazakhstan.

The precious metals provider has promoted Jennifer Ashworth to the role.

Nelson will be honored as the inaugural grant winner at the Gem Awards gala on March 13.

The American precious metals refiner’s day-to-day operations remain the same post-acquisition.

These aquamarine jewels channel the calming energy of the March birthstone.

The “Innovative Design” category and award will debut in the Spectrum division of this year’s AGTA Spectrum & Cutting Edge Awards.

Diamond jewelry was the star of the event formerly known as the SAG Awards.

Consumers were somewhat less worried about the future, though concerns about rising prices and politics remained.

Foerster is this year’s Stanley Schechter Award recipient.

Sponsorships and tickets to the annual fundraising event, set for May 31, are available now.

Chicago police and members of the U.S. Marshals Service tracked down the 35-year-old suspect earlier this week in St. Louis.

A 10-year alliance has also begun to address the shortage of bench jewelers through scholarships, enhanced programs, and updated equipment.

The “Splendente” collection has evolved to feature hardstone letter pendants, including our Piece of the Week, the onyx “R.”

The jewelry collection belonged to “one of society's most glamorous and beautiful women of the mid-20th century,” said the auction house.

The update came as Anglo took its third write-down on the diamond miner and marketer, which lost more than $500 million in 2025.






















