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

Buccellati Waikiki gold and diamond earrings
FinancialsMay 22, 2026
Richemont’s Jewelry Brands Lead the Charge in Q4

The company’s jewelry sales were up in Q4 and the fiscal year, with Richemont raising prices in part because of the cost of gold.

Shot of attendees at a JA New York jewelry trade show
Events & AwardsMay 22, 2026
Instore Buys JA New York Show

The deal closed this week, which means Instore will produce the JA NY show slated to take place this fall.

Leigh Maxwell Bauble Earrings
CollectionsMay 22, 2026
Leigh Maxwell Celebrates 5 Years at Couture With ‘Bauble’ Collection

The “Bauble” capsule collection of colorful one-of-a-kinds includes our Piece of the Week, the “Bauble” earrings, featuring rose zircon.

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.

Stuller 2026-2027 packaging and display catalog
MajorsMay 22, 2026
Stuller’s New Packaging, Display Catalog Is Out

The updated catalog has a newly dedicated section for gift wrapping.

Weekly QuizMay 21, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
My Next Question, Episode 5: Amanda Gizzi, Michelle Graff, Frank Everett
PodcastsMay 21, 2026
Episode 5: Sotheby’s Frank Everett Puts the Auction Market in Perspective

Everett covers colored stones’ surging popularity, the mellow return of the “Mellon Blue,” and his “The Devil Wears Prada” doppelgänger.

Springer’s Jewelers new flagship rendering
IndependentsMay 21, 2026
Springer’s Jewelers’ New Flagship Will Serve Next-Gen Luxury Shoppers

Fourth-generation CEO Lilly Mullen wants to emphasize experience, connection, and personalized service.

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.

Nina Pugliese
Events & AwardsMay 21, 2026
JA Announces Nina Pugliese Memorial Scholarship

The new award, created in partnership with Henne Jewelers, honors the late designer’s legacy through supporting jewelry education.

WFDB International Summit
SourcingMay 21, 2026
Botswana, Angola Join WFDB

The addition of the diamond-producing countries as nation affiliated members broadens the federation’s global representation, WFDB said.

Jewelry scam flyer and police officer handing flyer to elderly man
CrimeMay 20, 2026
NYPD Warns of Jewelry Swap Scams Targeting Seniors

The NYPD is warning elderly New Yorkers to keep their jewelry hidden when walking outside to avoid being a target.

New Adornment & Theory jewelry store in West Town, Chicago
IndependentsMay 20, 2026
Adornment & Theory’s New Store Feels Like Home

Designer Viviana Langhoff has realized her dream of owning a space for her Chicago jewelry store that looks and feels like her brand.

Couture Show Logo
Events & AwardsMay 20, 2026
Here Is Couture’s 2026 Education Lineup

The sessions will run from Friday, May 29, to Sunday, May 31, with one being a live taping of an episode of Couture’s podcast.

Morgan P. Richardson
Lab-GrownMay 20, 2026
Savannah Friedkin Jewelry Names New CEO

Former Stephanie Gottlieb Fine Jewelry executive Morgan P. Richardson is joining the lab-grown diamond jewelry brand.

Audemars Piguet x Swatch white Royal Pop watch
WatchesMay 19, 2026
Here’s the AP x Swatch Pocket Watch That Caused Pandemonium

The $400 pocket watch is a blend of Audemars Piguet’s iconic eight-sided Royal Oak and Swatch’s unserious Pop watches from the ‘80s.

Chris Ploof Modern Electrum Collection Milgrain Rows and Diamonds Ring
CollectionsMay 19, 2026
Chris Ploof’s New Collection Makes an Ancient Metal Modern

With gold prices on the rise, the “Modern Electrum” collection uses an alternative, non-tarnishing metal alloy composed of gold and silver.

Ellen and Michael Fruchtman
IndependentsMay 19, 2026
Ellen and Michael Fruchtman Retire, Sell Marketing Agency

Fruchtman Marketing has new owners, Erin Moyer-Carballea and Manuel Carballea, and will relocate to Miami.

Peter Smith and National Jeweler contributor
ColumnistsMay 19, 2026
Peter Smith: The (Mostly) Immutable Sales Truths

In a column for the 2026 State of the Majors issue, Smith lists 10 time-tested principles about sales that still ring true.

Edahn Golan, Tenoris co-founder and National Jeweler contributor
ColumnistsMay 18, 2026
Edahn Golan: What a K-Shaped Economy Means for Fine Jewelry

In a column for the 2026 State of the Majors issue, Golan spells out how the growing economic divide in the U.S. is reshaping the market.

Foundrae Limitless Expansion of Joy and Hope Collection Campaign Imagery
CollectionsMay 18, 2026
Foundrae’s New Collection Taps Into Joy

The “Limitless Expansion of Joy and Hope” collection evokes summer through colored gemstones and motifs of butterflies and florals.

Inchiquin emerald
CollectionsMay 18, 2026
Hancocks London Acquires Historic ‘Inchiquin’ Emerald

The jewel, circa 1890, is from the late Victorian era and was owned by descendants of the last high king of Ireland.

JCK Industry Fund Logo
Events & AwardsMay 18, 2026
Here Are the 2026 JCK Industry Fund Grant Recipients

This is what the nine recipients plan to do with the funds.

John Wayne Signet Ring
AuctionsMay 15, 2026
American Collector Ponies Up Almost $17K for John Wayne’s Ring

The Western star’s 14-karat gold signet ring sold for six times its low estimate following a bidding war at U.K. auction house Elmwood’s.

MJSA Education Foundation and Jewelers of America
Events & AwardsMay 15, 2026
JA, MJSA To Sponsor Roundtable at TJS

The discussion, "Rebuilding the Jewelry Workforce," will take place on Saturday, May 16, in Troy, Michigan.

Three gold rings set with yellow- and brown-hued diamonds
SourcingMay 15, 2026
State of Diamonds: The Way Forward for Natural Diamonds

The jewelry industry is reassessing its positioning as Gen Z reshapes the retail landscape and lab grown continues to gain market share.

Matching pair of Type IIa, D-color diamonds
AuctionsMay 14, 2026
White Diamonds Lead Sotheby’s Auction, Blue Diamond Does Not Sell

A matching pair of 18.38-carat, D-color diamonds from Botswana’s Jwaneng mine sold for $3.3 million, the top lot of the jewelry auction.

DeBeeers_Bridal_Display_Dune_1872x1052.jpg
Supplier BulletinMay 14, 2026
A Diamond Is Forever Continues Desert Diamonds – Bridal Reinvigorated

Sponsored by A Diamond Is Forever

×

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