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.

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.”
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 closure is part of a global restructuring that also includes PGI winding down its operations in Japan, South Korea, and Hong Kong.

The ring, our Piece of the Week, was designed by eight-year breast cancer survivor Rachel Chalchinsky of Color Source Gems.

The website offers enhanced member benefit access, industry directories, educational resources, a job board, and access to the MJSA Journal.

A Diamond Is Forever's holiday campaign reimagines natural diamond icons for a new generation celebrating individuality.

Boucheron and Pomellato had a strong third quarter, with Kering looking at jewelry as an increasingly important part of its portfolio.


Tara Sinchuri was the owner of Everest Jewels in Fairfield, Ohio, and a father of three. He was found dead in his store on Tuesday.

Bespoke experiences from Buccellati and Verdura are on the retailer’s 2026 “Fantasy Gifts” list.

Built on Relationships. Refined by Craft.

The number of participants at the fall show was up 12 percent.

The Academy and Grammy award-winning siblings have collaborated with John Hardy on a new jewelry line inspired by their personal style.

Diana Singer shared the stories of two “cursed” diamonds on this month’s podcast, which was inexplicably riddled with technical issues.

The family-owned jeweler has three locations across Missouri and Iowa.

The De Beers-owned diamond mine in South Africa is being put on ice as part of a round of previously announced cost-cutting measures.

The collection centers designs with clean geometric lines, chunky sculptural pieces, and recognizable details from the luxury fashion brand.

The miner said it saw particularly strong prices for larger, fine-quality rubies at the sale.

The guard opened fire on a man who was smashing a jewelry display case at La Gran Plaza in Fort Worth last week, police said.

The Texas jeweler added 2,000 square feet to its reimagined showroom, complete with a new design studio and an event space.

Jacob & Co.'s diamond masterpiece is the most expensive Fantasy Bra ever worn on the Victoria’s Secret Fashion Show runway.

The “Atelier” collection was inspired by the tools, rituals, and objects in an artist’s studio as a quiet rebuttal to an automated world.

The pending acquisition is an “exciting opportunity” for wedding vendors to grow their business, said The Knot Worldwide’s CEO.

"The Secret Gems" features eight Thai jewelry brands paired with a team of young craftspeople who create jewelry together to win challenges.

The brand’s “Modern Talisman” capsule collection introduces pendants inspired by the mythology, natural world, and spiritual ethos of Bali.

Independent jewelers from New Mexico to New Jersey answer the question: What has kept your store in business for 100 years?

The NRF is expecting holiday sales to increase this year, but consumers and retailers alike are facing Grinch-like headwinds.

Our Piece of the Week gathers the planets, represented by a variety of colored gemstones, in a pair of 14-karat yellow gold earrings.

The New York-based jeweler is moving its Amherst flagship store to a larger location in nearby Snyder.

Chen, who worked at Cartier and Tiffany & Co., will lead retail sales and operations for the luxury jeweler’s 11 U.S. stores.
























