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

White and yellow rough diamonds from the Ekati Diamond Mine
SourcingMay 06, 2026
Canada’s Oldest Diamond Mine Faces Uncertain Future

The owner of the Ekati mine, which opened in 1998, has filed for insolvency protection amid the significant decline in diamond prices.

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 Approved

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

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.

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.

Weekly QuizApr 30, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
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.

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.

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.

Police cars
CrimeApr 30, 2026
Masked Group Uses Hammers, Pepper Spray in Texas Jewelry Store Robbery

Officials are looking for a group that robbed Marc Robinson Jewelers at an outlet mall in Round Rock, Texas, in broad daylight on April 21.

OAR26_NJ_bulletin_1872x1052_01.jpg
Supplier BulletinApr 30, 2026
OROAREZZO 2026: The B2B Event for Italian Excellence in Goldsmith, Jewelry and Silver Manufacturing

Sponsored by OROAREZZO International Jewelry Exhibition

Tiffany & Co. Mother’s Day email opt out
TechnologyApr 29, 2026
The Thought Process Behind the Mother's Day Email Opt-Out

Some retailers are taking a nuanced approach to marketing what can be a difficult holiday for many.

Dick Abbott
IndependentsApr 29, 2026
Dick Abbott to Retire From The Edge

The Edge has announced its new CEO, as well as a new partnership with an investment firm focused on founder-led software businesses.

The Venetia Diamond Mine in South Africa
SourcingApr 29, 2026
De Beers’ Production Rises, Market Remains ‘Challenged’

De Beers’ diamond production was up 17 percent in Q1, boosted by increased output at its mines in South Africa and Canada.

John Wayne Signet Ring
AuctionsApr 29, 2026
This'll Be the Day You Own John Wayne's Ring

A signet ring belonging to the Western film star of Hollywood’s Golden Age will be up for auction at Elmwood’s next month.

Stock image of money
Policies & IssuesApr 28, 2026
Tariff Refunds: How to File, What to Expect

Importers can submit claims now to receive money back for the IEEPA tariffs they’ve paid, with refunds expected to take up to 90 days.

×

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