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

Pandora lab grown diamond necklace
Lab-GrownMay 08, 2026
NDC Publicly Criticizes Pandora Over ‘Misleading’ Natural Diamond Claims

NDC said in an open letter that Pandora’s statements about the carbon footprint of lab grown versus natural diamonds are inaccurate.

Glenn Spiro Old Moghul Golconda Earrings
TrendsMay 08, 2026
Rihanna Chooses ‘Desert Diamonds’ for 2026 Met Gala

She wore our Piece of the Week, Glenn Spiro’s “Old Moghul Golconda” earrings, featuring fancy brown-yellow diamonds totaling 51.90 carats.

Kennedy’s Jewelers tourmaline necklace
Events & AwardsMay 08, 2026
JA Announces 2026 CASE Award Winners

Two pieces were named “Best in Show,” one from the retail category and one from the supplier category.

Antique Jewelry & Watch Show
Brought to you by
Discover Timeless Treasures: A Showcase of Antique Jewelry & Timepieces in Las Vegas

Gain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.

Brilliant Earth Jane Goodall olive branch necklace and earrings
FinancialsMay 07, 2026
Brilliant Earth Appeals to Higher-Income Shoppers in Q1

The jewelry retailer noted resilience among its higher-end customers while demand softened for its lower-priced offerings.

Weekly QuizMay 07, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Kashmir sapphire ring
AuctionsMay 07, 2026
‘Spectacular’ Kashmir Sapphire Headlines Heritage Spring Jewelry Sale

Led by the 6.59-carat sapphire, the sale garnered $9.7 million, a record total for a Heritage jewelry auction.

Billy Welshoff
MajorsMay 07, 2026
Gannon & Scott Names New Regional Account Executive

In his new role, sales specialist Billy Welshoff will focus on the eastern United States.

lvajws image 1.jpg
Brought to you by
Las Vegas Antique Jewelry & Watch Show: Showcasing the Most Collectible Merchandise from Across the Globe

Gain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.

José Gaztelu
WatchesMay 07, 2026
Chrono24 Names New CEO

José Gaztelu has been promoted to the role, which has been vacant since last year.

Jewelers of America Logo
Events & AwardsMay 07, 2026
JA Accepting Applications for 2026 Scholarship Program

It has also opened the application period for the Seymour & Evelyn Holtzman Bench Scholarship through June 30.

Pandora lab grown diamond rings
FinancialsMay 06, 2026
Pandora to Add Carbon Footprint Info to Lab-Grown Diamonds

The company announced the change alongside its Q1 results, which showed that the jewelry brand’s year is off to a shaky start.

Saks Fifth Avenue door sign
MajorsMay 06, 2026
Saks Global Begins Layoffs, Reorganization Plans Closer to Approval

The retailer will cut 16 percent of its corporate workforce as part of its plan to exit bankruptcy.

Heuer Monaco Le Mans
AuctionsMay 06, 2026
Steve McQueen’s Heuer Monaco Watch Heads to Sotheby's

Of the many examples used in the filming of “Le Mans,” this one is believed to have spent the most time on Steve McQueen’s wrist.

Met Gala 2026 Beyonce, Lisa Manobal, Hailey Bieber
EditorsMay 05, 2026
This Ohio Designer’s Jewelry Made It to the Met Gala

Megan Piccione dressed Lauren Wasser in layers of diamond jewelry, making her stand out in a crowd that included celebrities like Beyoncé.

Doug Hucker
SourcingMay 05, 2026
Doug Hucker Returns to His Roots

Following decades of association leadership, the “semi-retired” colored gemstone expert is turning his focus to gemstone education.

New York City FC winning the Philip F. Anschutz MLS Cup Trophy in 2021
Events & AwardsMay 05, 2026
AMNH to Showcase Famous Jewelry, Trophies in Sports History

The museum’s new exhibition will feature one of Jesse Owen’s Olympic medals, Yogi Berra’s crown, Super Bowl rings, and more.

Exhibitor at JIS
Events & AwardsMay 05, 2026
JIS Launches Brand Exposure Program

The new program provides access to media exposure and editorial opportunities for exhibitors and retailers.

Melanie Georgacopoulos Eclipse Collection Campaign Imagery
CollectionsMay 04, 2026
Melanie Georgacopoulos Turns Pearls Into Light for ‘Eclipse’ Collection

The “Eclipse” jewelry collection captures the fleeting moment where light and shadow align though onyx, diamonds, and freshwater pearls.

National Jeweler columnist Sherry Smith, partner at The Retail Smiths
ColumnistsMay 04, 2026
The Key Mindset for Better Trade Show Buying

Buying discipline at trade shows starts with clarity about your inventory levels, Smith writes.

Mugshot of 20-year-old Landen Julian Ballard of Vero Beach, Florida
CrimeMay 04, 2026
Pawn Shop Manager Shot, Killed in Florida

Lazaro Rodriguez Vega was murdered inside Cash Out Gold and Silver in Fort Pierce. A 20-year-old man has been charged in the case.

Gild Zadok, Segev Zadok, and Jonathan Zadok at Austin park
IndependentsMay 04, 2026
Zadok Jewelers, Austin Parks Foundation Support Wildflower Preservation

A portion of every engagement ring sold in its Austin showroom will support the care and preservation of Austin’s wildflowers and green spaces.

Gemist new retailer offering
TechnologyMay 01, 2026
Gemist, Saban Onyx Partner on Retailer-Focused Customization Offering

Their partnership combines Gemist’s customization technology with Saban Onyx’s U.S.-based manufacturing capabilities.

Hand putting gas pump in car
SurveysMay 01, 2026
Consumer Confidence Inches Up in April Despite Rising Gas Prices

Respondents were concerned about the Middle East conflict and how it will impact their finances.

Tiffany & Co. Blue Book 2026: Hidden Garden Butterfly Diamond Necklace
CollectionsMay 01, 2026
A ‘Hidden Garden’ Emerges in Tiffany & Co.’s 2026 Blue Book

Our Piece of the Week, the “Butterfly” necklace, showcases a 7.02-carat oval diamond set between diamond, platinum, and 18-karat gold wings.

The Retail Smiths partner and National Jeweler columnist Peter Smith
ColumnistsApr 30, 2026
Peter Smith: A Sleazy Salesman and the Case for Regret Avoidance

Smith uses a comment he overheard in the grocery store to remind retailers that their job is to inspire buying behavior, not just sell.

Claire’s new summer campaign
MajorsApr 30, 2026
Claire’s New Summer Campaign Is a Sensory Wonderland for Gen Alpha

“A Girl SMR at Claire’s” celebrates girlhood through the five senses with stacked jewelry, slime toys, scented accessories, and ASMR.

Cartier London Crash Watch
AuctionsApr 30, 2026
Vintage Cartier Watch Crashes Through Records, Selling for $2M

Believed to be one of three made in 1987, the Cartier London Crash was hot at the “Shapes of Cartier” sale at Sotheby’s Hong Kong.

×

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