Sourcing

‘100 Carats’ Exhibition Opens at LA Museum

SourcingFeb 14, 2024

‘100 Carats’ Exhibition Opens at LA Museum

A new display at the Natural History Museum of Los Angeles County features dozens of gemstones each weighing 100 carats or more.

Jonker I Diamonds
The 125-carat Jonker I Diamond is the centerpiece of the exhibit. The largest stone cut from the world-famous Jonker Diamond, it has not been on public view for decades. (Photo courtesy of NHMLAC)
Los Angeles—An exhibition featuring rare gemstones weighing at least 100 carats each is on view now at the Natural History Museum of Los Angeles County (NHMLAC). 

The exhibition, “100 Carats: Icons of the Gem World,” showcases more than 30 gemstones. 

Of those, 20 stones weigh more than 100 carats each. This grouping includes the centerpiece of the collection and one of the largest cut diamonds in the world, the Jonker I Diamond, pictured at the top of the story. 

The 125-carat diamond is the largest stone cut from the Jonker Diamond—the fourth-largest diamond in the world when it was discovered in 1934. The public has not seen this diamond since it was bought by a private buyer in 1977, the museum said.

Though it has been showcased by royalty and Hollywood stars over the years, this is the Jonker I’s first time on display in a museum in more than eight decades, thanks to current owner Ibrahim Al-Rashid, who lent the stone to the museum for the exhibition.

“The Jonker is one of the largest and most famous diamonds ever unearthed,” said Al-Rashid, who is also chairman of Miami-based Limestone Asset Management. 

“Its beauty and history are compelling. I'm grateful to have [The Jonker I] on display for viewers to enjoy for the first time in many decades.”

Also on display, for the first time ever, is the 100.06-carat sapphire, “The Miracle,” which was discovered last year, as mentioned in the promotional video linked below.

The Miracle sapphire
“The Miracle” is making its debut to the public in the “100 Carats” exhibit. (Photo courtesy of NHMLAC)


A variety of other colored gemstones are on view as well, including the “Crown of Colombia,” a 241.04-carat Colombian emerald, and “The Scarlet Red,” a 112.68-carat rubellite.

See The Gemstones 

“The collection presented within ‘100 Carats’ is unrivaled in both importance and rarity within the gem world,” said Dr. Lori Bettison-Varga, president and director of NHMLAC.  

“Gems of such magnificent size and quality have never been displayed before in this quantity in one exhibition. This unique exhibition captures the brilliance of our mineral sciences collection and offers a breathtaking experience for our visitors this winter and beyond.” 

 Related stories will be right here … 

This exhibition was organized by NHMLAC in collaboration with Robert Procop Exceptional Jewels, the collection from which comes, among others, “The Blue Star,” a 108-carat aquamarine, and “The Imperial,” a 111-carat green tourmaline.  


The 100-carat loose stones are displayed inside the museum’s Hixon Gem Vault, and outside the vault, mounted jewelry is on view, featuring pieces with gems weighing 50 to 100 carats. 

While these gems are beautiful and brilliant, the museum said, each gem is also a “minor geologic miracle,” their existence evidence of mountain-building events, volcanic eruptions, and the unforgiving pressures and temperatures of the Earth’s interior.  

This exhibit allows guests and scientists a glimpse into Earth's geological processes and circumstances that happened millions of years ago to form them in the first place, while also illuminating the long and rich history of art and culture through the ages. 

“The show is a once-in-a-lifetime event,” said NHMLAC’s Curator of Mineral Sciences Dr. Aaron Celestian.  

“The rarity of these gems cannot be overstated. Visitors will be able to see tremendous examples of gemstones in a rainbow of vivid colors that have been expertly cut to display their remarkable brilliance. I am thrilled that we’ve been able to bring these giant gems together for the first time.” 


NHM’s 6,000-square-foot Gem and Mineral Hall opened in 1978 and features exhibition halls of minerals, rocks, gems, ores, and meteorites. 

The permanent collection features roughly 175,000 specimens, including fine gem collections from Myanmar (formerly Burma), South Africa, Colombia, Sri Lanka, and other destinations.

The “100 Carats: Icons of the Gem World” exhibit opened Dec. 8, 2023, and will close April 21. Exhibition programming and hours may vary. 

Entrance is included in the price of admission to NHMLAC or free for members. 

More information is available on the museum’s website.  
Lauren McLemoreis the associate editor, gemstones at National Jeweler, covering sourcing, pricing and other developments.

The Latest

Guzema Founder and Creative Director Valeriya Guzema and Co-Owner and CEO Mariana Lenha
EditorsJul 16, 2026
Q&A: Guzema’s Co-Owners On Its US Expansion, 10-Year Anniversary

Valeriya Guzema and Mariana Lenha look back on the last decade and discuss the Ukrainian brand’s first U.S. store.

Necklace from Vhernier’s “Freccia” high jewelry collection
FinancialsJul 16, 2026
Richemont’s Jewelry Sales Soar for the Seventh Quarter in a Row

Jewelry sales for the company, which owns Cartier, Van Cleef & Arpels, Vhernier, and Buccellati, rose 21 percent in the first quarter.

Grace Barden
Events & AwardsJul 16, 2026
MJSA Mentor & Apprenticeship Program Certifies First Advanced Apprentice Graduate

The graduate, Grace Barden, credited the program with helping her secure a job as a bench jeweler.

Brought-To-By-Article-Top-Image.jpg
Brought to you by
Wedding Band Trends 2026: Personalization Takes Center Stage

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

Jewelers of Louisiana 80th Annual Convention Logo
Events & AwardsJul 16, 2026
Jewelers of Louisiana to Host 80th Convention

The event, scheduled for next month in New Orleans, will include dinner, a custom jewelry design contest, and education sessions.

Weekly QuizJul 16, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Barry Berman
IndependentsJul 15, 2026
New Jersey Jeweler Barry Berman Dies at 81

The founder of Fords Jewelers, Berman is remembered for his love of connecting with his community.

Watches of Switzerland Mall of America store
FinancialsJul 15, 2026
Watches of Switzerland’s US Sales Jump 18%, Declines to Comment on Sale Report

The watch and jewelry retailer had a strong fiscal year despite what its CEO described as a “complex operating backdrop.”

DCA-NJ-article-1872x1052-060826.jpg
Brought to you by
Building the Future of Jewelry Retail: DCA Expands Education, Leadership Development, and Workforce Solutions

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

Hamptons Jewelry Show exhibitors Maison Mèrenor, Jochen Leën, Studio Javo
Events & AwardsJul 15, 2026
Hamptons Jewelry Show to Return in July

The open-to-the-public luxury jewelry and timepiece show, in its second year, is slated for July 23-26.

Pomellato Eye of Tanzanite Necklace and Pin-Up Ring
CollectionsJul 15, 2026
Pomellato’s New High Jewelry Is Liberating

Bold color, expressive gem-setting, and sculptural form define the three chapters that make up “Stile Libero.”

Foundrae London Store Showcases
IndependentsJul 14, 2026
Foundrae Opens First Standalone Store Outside US

The New York-based jewelry brand has expanded overseas, opening a store in London’s Mayfair district.

The Retail Smiths Principal Partner and National Jeweler columnist Sherry Smith
ColumnistsJul 14, 2026
Sherry Smith: What Today’s Jewelry Consumer Is Telling Us

Rising revenue does not automatically mean a healthy business, particularly in the current economic landscape, Smith writes.

Mindi Mond New York emerald shoulder duster earrings
TrendsJul 14, 2026
Amanda’s Style File: Shoulder Dusters

These long, fluid drop earrings are sure to catch the eye.

FBI Most Wanted image of Alberto Perez-Elias
CrimeJul 14, 2026
Man Charged in $1M Jewelry Store Heist Lands on FBI Most Wanted List

Alberto Perez-Elias is one of four men charged with robbing a Cape Coral, Florida, jewelry store and is the only one still at large.

Aerial view of Amazon
Events & AwardsJul 14, 2026
Conference on Mining, Sustainability Kicks Off in NYC

Initiatives in Art and Culture is hosting its 16th annual Gold and Diamond Conference, with the theme of “Resilience.”

Stephanie Gottlieb Casual Carats Lab-Grown Dimond and Silicone Rings
Lab-GrownJul 13, 2026
Stephanie Gottlieb Changes Her Mind on Lab-Grown Diamonds

The designer, who once said she’d never sell lab-grown diamonds, debuted two capsule collections designed to be fun and easy to wear.

File photo of the Venetia Diamond Mine in South Africa
SourcingJul 13, 2026
De Beers Announces Potential Layoffs, 2-Year Production Pause at Venetia

The diamond miner and marketer is undergoing another round of cost-cutting measures ahead of its sale by Anglo American.

JIS sign in convention center lobby
Events & AwardsJul 13, 2026
Registration Opens for JIS Fall 2026 Show

The annual trade-only buying event is slated for Oct. 16-19 in Miami Beach, Florida.

“Elements” bracelet best of show AGTA Spectrum 2025
Events & AwardsJul 13, 2026
AGTA Accepting Entries for Spectrum 2026

AGTA also has announced the lineup of judges for the colored gemstone cutting and jewelry design contest’s various categories.

Arena Club Twilight and Eclipse Time Boxes
TechnologyJul 10, 2026
There’s a New Blind Box for Luxury Watches

Collectibles platform Arena Club’s new Time Boxes could contain a Rolex or Patek Philippe watch.

Jade Trau Constellation Plié Collar
TrendsJul 10, 2026
Jade Trau Creates a Constellation of Diamonds

The “Constellation Plié” collar, our Piece of the Week, features diamonds arranged in a constellation of shining stars.

Former De Beers CFO of Brands and Consumer Markets Shaun Wills
SourcingJul 10, 2026
CFO of De Beers’ Consumer-Facing Division Leaves Company

Shaun Wills joined the company in 2024 and was chief financial officer of the De Beers Brands and Consumer Markets division.

Brilliant Earth watches
WatchesJul 10, 2026
Brilliant Earth Expands Into Watches

In honor of its 20th anniversary, the jewelry brand has released a limited-edition collection of Swiss-made timepieces.

Boucheron Human Being Collection Tattoo Necklace
CollectionsJul 09, 2026
Boucheron’s New High Jewelry Collection Is an Ode to the Human Touch

“Human Being” highlights the similarities and differences between us through five sets of jewelry that celebrate fine craftsmanship.

Baume & Mercier watch
WatchesJul 09, 2026
Damiani Group Finalizes Acquisition of Baume & Mercier

Richemont will continue to provide operational services for the watch brand for a period while the group prepares to integrate it.

Joopiter Logo
AuctionsJul 09, 2026
Pharrell Williams’ Joopiter Hires Former Bonhams Exec to Head New Watch Division

Nate Borgelt will lead the digital auction house and content platform’s new division as head of watches.

Enoch Michael
Events & AwardsJul 09, 2026
Halstead Names 2026 Grant Winner

Enoch Platero, founder and designer behind Enoch Michael, is the first Native American jeweler to win the award.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy