Grading

Sarine To Acquire Majority Stake in GCAL

GradingJan 13, 2023

Sarine To Acquire Majority Stake in GCAL

The acquisition allows GCAL to expand overseas while giving Sarine a “recognized and respected” channel for offering eGrading in the U.S.

20230113_Sarine acquiring GCAL.jpg
Sarine Technologies Ltd. has signed a memorandum of understanding to acquire a majority stake in New York-based grading lab GCAL, which will transition to using Sarine’s automated, cloud-based and artificial intelligence-driven eGrading technology.
New York—Israel-based Sarine Technologies Ltd. is set to acquire a majority stake in the Gem Certification and Assurance Lab, the laboratory Don and Pamela Palmieri opened more than 20 years ago.

Sarine announced the pending acquisition early Thursday, stating it had signed a non-binding memorandum of understanding (MOU) to purchase GCAL in an all-cash deal that’s subject to customary due diligence.

The financial terms of the deal are not being disclosed. A closing date and the name for the combined entity will be announced once due diligence is completed, Sarine said.

The acquisition will give New York-based GCAL, a single-lab operation, opportunity to expand overseas by using Sarine’s automated, artificial intelligence-driven eGrading while giving Sarine ownership over a grading laboratory with a known and respected name.

“We are thrilled by this opportunity to join forces with and acquire a major position in GCAL,” Sarine CEO David Block, who was traveling Thursday and unavailable for an interview, said in a press release.

“I am confident that GCAL, leveraging Sarine’s technologies, will now be able to increase its market presence, to the benefit of the industry in general and to U.S. consumers in particular, without degrading from their industry-unique principles of guaranteed quality and consistency. No less importantly, Sarine will gain access to the Palmieris’ decades-long experience in managing a gem lab with the highest standards possible and will gain a recognized and respected channel through which to offer the expansive key U.S. retail industry its grading technologies, to the benefit of retailers and consumers alike.”

Angelo Palmieri, GCAL’s chief operations officer, said in an interview Thursday that in the last decade or so, the industry has seen major labs rapidly open multiple locations overseas, only to have the quality and consistency of their grading deteriorate.   

GCAL views using Sarine eGrading as the way to expand overseas without sacrificing quality or its Zero Tolerance 4Cs Consumer Guarantee, the lab’s cash-back policy for consumers that guarantees the accuracy of the cut, color, clarity and carat weight on GCAL certificates. 

“We would have not sold the company if we had to abandon the guarantee,” GCAL President Don Palmieri said.  

Angelo said Sarine’s AI machine grading offers consistent and accurate grading if the machines are programmed correctly, and GCAL is “highly confident” they are. 

Don added, “There’s no question that when it comes to diamond technology, [Sarine] is the leader in the world. We like to believe we [at GCAL] are the most accurate and consistent, though probably the smallest, of the internationally recognized labs. 

“By taking our integrity and the quality of the work we do and connecting it with AI, it’s a grand-slam homerun.” 

 Related stories will be right here … 

GCAL leadership will remain in place following the proposed acquisition, and Don and Angelo said GCAL will be retaining all of its staff and likely adding more. 

It will also stay in its current location, on the 27th floor at 580 Fifth Ave.

Both Don and Angelo said it is too early to say where and when GCAL might be opening labs overseas. 

While GCAL will be transitioning to AI-based grading, Don said gemologists are still going to be examining the diamonds submitted to the lab for grading.

He also said GCAL will not stop offering any of its services—like its new cut grade standard 8X—because of the acquisition but, instead, will be adding more, such as Sarine’s Journey reports, which trace diamonds from mine to market. 

Don and Pamela Palmieri opened GCAL in 2001. 

They sold the lab to Collectors Universe (which also owned American Gemological Laboratories, or AGL, at one point) in 2006 but bought it back in 2009. 

Angelo joined GCAL in 2005. He became an equal partner in the business after they repurchased the lab from Collectors Universe. 

Sarine is based in Hod HaSharon, Israel, and is publicly traded on the Singapore Exchange Mainboard. 

The Latest

The Story of Everything Campaign, Toadstool Mushroom and Cosmic Egg
CollectionsJun 30, 2025
State Property’s New Jewelry Tells ‘The Story of Everything’

Co-founders Afzal Imram and Lin Ruiyin brought their son’s story of a cosmic egg, toadstool, and railroad to life in their new collection.

Smart Age Solutions CEO Emmanuel Raheb
ColumnistsJun 30, 2025
The Smart Lab: Why Q3 Is the Secret Weapon For Holiday Jewelry Sales

The best time to prepare for the holiday season is right now, according to columnist Emmanuel Raheb.

Morgan Keefe
Events & AwardsJun 30, 2025
AGA Names Recipient of 2025 Gemological Education Scholarship

This year’s winner is Morgan Keefe, who is currently studying at GIA to be a gemologist.

an instructor and a student in a bench jewelry classroom
Brought to you by
Investing in the Next Generation of Bench Jewelers

The Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.

The Jewelry Book
IndependentsJun 30, 2025
Melanie Grant’s New Book Explores 200 Years of Jewelry

“The Jewelry Book” comes out this September.

Weekly QuizJun 26, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Gemist
TechnologyJun 27, 2025
Gemist Raises $6M in Funding to Scale Jewelry Tech Platform

The company is focused on modernizing the custom jewelry buying experience with e-commerce tools like product visualization and 3D styling.

Jeff Preolo, David Stout, Levi Higgs, David Benavides
IndependentsJun 27, 2025
David Webb Announces New Hires, Promotions

Following its recent acquisition, the storied brand has updated its leadership team and regional managers.

Jewelers of America logo with meetup, State of the Majors, giveaway and massages
Brought to you by
Jewelers of America is Headed to Las Vegas for JCK 2025

The countdown is on for the JCK Las Vegas Show and JA is pulling out all the stops.

Blake Graham and Jessica Kohoutek
Events & AwardsJun 27, 2025
AGS, GIA Announce Beatrice Shipley Scholarship Winner

AGS also named the recipient of its “Women in Leadership” scholarship.

Buddha Mama Monstera Ring
CollectionsJun 27, 2025
Piece of the Week: Buddha Mama’s ‘Monstera’ Wrap Ring

The 20-karat yellow gold and diamond wrap ring is modeled after the Monstera plants in the garden of the brand’s Miami villa.

Cashier handing Rocksbox bag to customer
MajorsJun 26, 2025
Why Rocksbox Is Opening Stores As Signet Jewelers Downsizes

Rocksbox President Allison Vigil shared the retailer’s expansion plans, and her thoughts on opening stores in malls.

Penny Ruston
IndependentsJun 26, 2025
Penny Ruston Dies at 80

The creator of the WJA Chicago chapter is remembered as a champion for women in the jewelry industry and a loving grandmother.

Stock image of woman shopping
SurveysJun 26, 2025
After Recovering in May, Consumer Confidence Dips in June

The decline was consistent across age groups and almost all income groups, with tariffs and inflation still top of mind.

Sorellina Playlist: Electric Dreams Campaign
CollectionsJun 26, 2025
Jam Out With Sorellina’s Jimi Hendrix-Inspired Jewels

The “Playlist: Electric Dreams” collection brings lyrics from the musician’s song, “Little Wing,” to life through fine jewelry.

The Jewelry Symposium event
Events & AwardsJun 26, 2025
The Jewelry Symposium Is Looking for Speakers for 2026 Event

The event is set for May 16-19 in Detroit, Michigan.

Exterior of Marissa Collections’ new store in Nantucket, Massachusetts
IndependentsJun 25, 2025
Marissa Collections Opens in Nantucket as Legal Fight Continues

The Vault’s Katherine Jetter is accusing the retailer of using info she shared for a potential partnership to move into Nantucket.

Counterfeit Cartier “Juste Un Clou” bracelet
CrimeJun 25, 2025
Customs Nabs Another Big Shipment of Fake Cartier, Van Cleef Jewelry

Agents seized 2,193 pieces, a mix of counterfeit Cartier “Love” and “Juste Un Clou” bracelets, and Van Cleef & Arpels’ “Alhambra” design.

Karine Choudhrie Big Splash Circus Starfish and Lantern Fish
CollectionsJun 25, 2025
Splash into Karina Choudhrie’s Collection of Underwater Circus Performers

The designer brought her children’s book, “The Big Splash Circus,” to life through a collection of playful fine jewelry characters.

Jewelers of America
Events & AwardsJun 25, 2025
JA Announces Impact Initiative Fund Recipients

The trade association has chosen the recipients of the funding initiative it formed to foster the growth and sustainability of the industry.

John Dyer Montana Sun Sapphire
SourcingJun 25, 2025
2025 AGTA Spectrum Awards Open for Entries

The organization has also announced this year’s slate of judges.

Khepri Jewels Luna collection fancy color fringe multi-shape drop diamond earrings
EditorsJun 24, 2025
The Best New Jewelry from Couture 2025, Part 2

Associate Editor Natalie Francisco shares 20 additional pieces that stood out to her at the Couture show.

Lori Tucker
IndependentsJun 24, 2025
Colorado Bench Jeweler Celebrates 50 Years With Local Retailer

Lori Tucker started at Williams Jewelers when she was 18 years old.

“Marvel | Citizen Zenshin” watch for the new The Fantastic Four movie
WatchesJun 24, 2025
Citizen’s New ‘Fantastic Four’ Watch Is Literally Super

The “Marvel | Citizen Zenshin” watch is crafted in Super Titanium and has subtle nods to all four “Fantastic Four” superheroes on the dial.

XO Tacori diamond ring
MajorsJun 24, 2025
Tacori, QVC to Launch Exclusive Lab-Grown Diamond Jewelry Collection

The “XO Tacori” collection was designed to blend luxury and accessible pricing.

Graphic for Las Vegas recap episode of “My Next Question”
Recorded WebinarsJun 23, 2025
Watch: Top Trends at Couture, JCK Las Vegas 2025

National Jeweler and Jewelers of America discuss the standout jewelry trends and biggest news to emerge from the shows this year.

Luanda Accord
SourcingJun 23, 2025
Diamond Producers, Organizations to Kick in Money to Promote Natural Diamonds

Signatories to the “Luanda Accord” committed to allocating 1 percent of annual diamond revenue to the Natural Diamond Council.

Penny Preville, Maggie Hess, Stella Song, and Benjamin King
Events & AwardsJun 23, 2025
Jose Hess Design Awards Celebrate 6 Jewelry Designers

The winning designs captured the “Radiance” theme.

×

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