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

A Marvelous Journey: The Collection of Maurice Tempelsman
AuctionsJun 04, 2026
Treasures from Maurice Tempelsman’s ‘Marvelous’ Life Head to Auction

Up for auction at Sotheby’s, the collection of Tempelsman’s personal effects includes a Cartier Tank watch Jackie O. gifted him.

Dakota Badia and Nancy Badia
CollectionsJun 04, 2026
Buddha Mama to Spend the Summer in Aspen

The Miami-based fine jewelry brand will host its first summer residency in the Colorado mountain town from June 5 to Aug. 23.

AGS at Peter Yantzer Building dedication
MajorsJun 04, 2026
AGS Honors Late Peter Yantzer, Holds Time Capsule Ceremony

The organization also announced its international board of directors for the 2026-2027 term.

PG-05-SHOT-2-LUCIDA.033 1.png
Brought to you by
All Eyes on Gold Prices. Alternatives to Look For. And What to BEWARE of in Vegas

As gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.

Neiman Marcus downtown Dallas store
MajorsJun 04, 2026
Neiman Marcus’ Downtown Dallas Store to Close in September

Saks Global confirmed the closure this week, spelling the end for a store that’s been part of downtown Dallas for more than 100 years.

Weekly QuizMay 28, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
The Retail Smiths founder and National Jeweler columnist Peter Smith
ColumnistsJun 03, 2026
Peter Smith: When Top Talent Leaves and What It Says About You

Smith discusses how managers should handle a top performer's exit, warning that a poor response could have a lasting impact.

Screenshot of the Tracr website homepage
GradingJun 03, 2026
GIA’s Tracr Investment Is First Step Toward Industry-Owned Platform

The Gemological Institute of America is now a 30 percent stakeholder in Tracr, the De Beers-backed blockchain for diamonds.

1872x1052-NextGem-2026-National-Jeweler-Advertorial.jpg
Brought to you by
How Modern Training Is Becoming a Competitive Advantage for Jewelry Retailers

With the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.

The 1916 Company Coast to Coast Roadshow
WatchesJun 03, 2026
The 1916 Company Taking Pre-Owned Rolexes on the Road, Again

The retailer is bringing Rolex Certified Pre-Owned watches to five U.S. cities in 2026 for collectors to see, try on, and purchase.

Jessica Alba in Gabriel & Co. campaign
IndependentsJun 03, 2026
Jessica Alba Is the New Face of Gabriel & Co.

The actress and entrepreneur stars in the jeweler’s new campaign that celebrates life’s quiet moments.

Anna Maccieri Rossi Ora Wood Sunrise Cuff, Marie Lichtenberg High Jewelry Bandana, Anna Maccieri Rossi Carpe Diem Pendant
TrendsJun 03, 2026
State of Design: Only the Innovative Will Survive

The price of gold has risen, affecting the number of pieces designers make, the materials they use, and how they position themselves.

Woman with crossed hands and rings on fingers
FinancialsJun 02, 2026
Signet Jewelers’ Q1 Sales Up 2% As It Focuses on ‘Core Four’

The jewelry retailer is zeroing in on Zales, Jared, Kay Jewelers, and Blue Nile as it looks to create unique brand identities for each.

James Marks
WatchesJun 02, 2026
Watch Industry Veteran James Marks Joins Sotheby’s

Sotheby’s has appointed the former Phillips executive as its global head of private sales and retail in its watches division.

Sothebys 10-carat blue diamond, 120 carat Harry Winston diamond necklace
AuctionsJun 02, 2026
Sotheby’s to Auction 10-Carat Blue Diamond, 1960s Harry Winston Necklace

A private collection of five Paraíba tourmalines also will be up for sale at Sotheby’s High Jewelry auction in New York, scheduled for June 16.

People shopping in a jewelry store
IndependentsJun 02, 2026
State of Retail: 6 Things Retailers Should Know About Consumers Today

From Gen Z’s view of luxury to “doom spending,” these are the six consumer trends to note this year.

Zahn-Z Big Zaha Art Deco Ring
Events & AwardsJun 01, 2026
Design Atelier Brands Have a Big Night at Emotional Couture Design Awards

The show started by honoring Mildred Marcano, ended with a tearful Beth Anne Bonanno, and recognized a dozen-plus designers in between.

Gemfields emeralds
SourcingJun 01, 2026
Gemfields’ Higher-Quality Emerald Auction Achieves $26.8M

The miner said demand for higher-quality emeralds is stable, but there is notable caution in the market.

Cultus Artem River of Heaven Necklace
CollectionsMay 29, 2026
Cultus Artem’s Necklace Is the Oasis in Las Vegas’ Desert

The “River of Heaven” necklace, our Piece of the Week debuting at Couture, combines 26 salt and pepper diamonds spaced by Tahitian pearls.

Sean Dunn, Amy Greenberg, Elise Greenberg, Coleman Clark, Mitchell Clark
IndependentsMay 29, 2026
Meet the 2026 Retailer Hall of Fame Inductees

This year’s inductees include second-, third-, and fourth-generation jewelers.

Jesse Itzler
Events & AwardsMay 28, 2026
JCK Announces Jesse Itzler as 2026 Keynote Speaker

The author, speaker, and entrepreneur will give his presentation, “Spiritual Billionaire,” on Saturday morning.

JCK Rocks Nelly Graphic
Events & AwardsMay 28, 2026
JCK Rocks To Ride With Nelly

Three-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach on Sunday night.

A screen shot of The Clear Cut's website
MajorsMay 28, 2026
Signet Jewelers to Buy The Clear Cut

Signet will integrate the online-only, natural diamond-focused jeweler into Blue Nile, which it wants to position as a higher-end retailer.

Itä Aguaviva Tassel Pendant, Ashaha Anzar Cuff, Cultus Artem Quetzal Ring
CollectionsMay 28, 2026
Meet The 17 Newcomers to Couture’s Design Atelier

These up-and-coming jewelry brands are bringing their distinct aesthetic and unique point-of-view to the Design Atelier for the first time.

GCAL 8x Cushion Cut diamond
GradingMay 28, 2026
GCAL By Sarine Launches 8X Cushion Cut

The lab’s proprietary diamond cut grade has been expanded to include the popular fancy shape.

Stock image of police cars with their lights on
Events & AwardsMay 27, 2026
5 Security Tips for Las Vegas Jewelry Market Week 2026

This year, it’s what could happen outside of show hours that worries JSA Executive Vice President Scott Guginsky.

Smart Age Solutions CEO and National Jeweler columnist Emmanuel Raheb
ColumnistsMay 27, 2026
What Jewelers Can Learn From Luxury Fashion’s Digital Playbook

High-end fashion houses know how to emotionally connect with customers online. Retail jewelers should take note, Emmanuel Raheb writes.

Couture The Iridescence designers Aziza-Abdullah Nicole, Cindy Liebe, Danyell Roscoe, Jessica Liu, Marie Helena from Rebel Jewelry, Julia de Souza, and Xiao Wang
Events & AwardsMay 27, 2026
Couture’s ‘The Iridescence’ Will Showcase 7 Emerging Jewelry Designers

The designers are the third cohort of mentees from the show’s Belonging @ Couture mentorship program.

×

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