Effy Introduces Brand Dedicated to Lab-Grown Diamonds
“Promise by Effy” includes fashion jewelry and engagement rings.

Called “Promise by Effy,” the brand is a mix of fashion jewelry—think huggie and stud earrings, tennis bracelets and necklaces, trendy rings, classic pendants—and ready-to-wear and custom engagement rings.
In the release announcing the collection, Effy described the launch as the company “going all-in on lab-grown diamonds.”
Effy already sells lab-grown diamonds in some of its jewelry, but “Promise by Effy” is a more extensive collection and a dedicated brand for the man-made stones.
The company sees the launch of “Promise by Effy” as fulfilling two goals.
First, it said, the brand meets consumers’ increasing demand for sustainable luxury goods.
Effy said it sources the diamonds in “Promise” from “zero-emission foundries,” though it declined to share its exact sources.
It stated only that the lab-grown diamonds in the collection are “grown in factories that adhere to strict emissions and environmental regulations.”
The second goal the launch fulfills is it continues the late Effy Hematian’s vision of providing diamond jewelry to consumers at accessible price points.
The jewelry in “Promise by Effy” ranges in price from $495 for a pair of 1-carat total weight round brilliant lab-grown diamond stud earrings set in 14-karat gold to $33,570 for a tennis necklace featuring nearly 30 carats of emerald-cut lab-grown diamonds.
Prices for the collection’s ready-to-ship engagement rings range from about $3,000-$10,000.
Custom “Promise by Effy” engagement rings also are available, and the brand’s website includes a ring builder.
Select styles in the “Promise by Effy” collection are available at the Effy Hematian flagship store in New York City, while the full collection is available on the “Promise by Effy” website.
The brand soon will be available at Effy stores on cruise ships.
Once it is introduced on ships, which should be in a month or two, the company said all of its lab-grown diamond jewelry will be sold through the “Promise by Effy” brand name.
The company said there are no plans to sell “Promise by Effy” via its other retail partners at this time.
The Latest

Woodley is seen in the campaign wearing our Piece of the Week, the “Frida” collar featuring 13 pieces of hand-carved Venetian glass.

A WeBuyVintage jewelry expert uncovered how much the flea market find was actually worth.

The founder of natural colored diamond wholesaler Pancis Gems shares stories from his five decades in the industry.

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

Submissions for the milestone 25th annual Gem Awards will be accepted across three categories from now through July 31.


Valeriya Guzema and Mariana Lenha look back on the last decade and discuss the Ukrainian brand’s first U.S. store.

The diamond mine, which opened nearly 30 years ago in Canada’s Northwest Territories, is expected to shut down by mid-August.

DCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.

Jewelry sales for the company, which owns Cartier, Van Cleef & Arpels, Vhernier, and Buccellati, rose 21 percent in the first quarter.

The graduate, Grace Barden, credited the program with helping her secure a job as a bench jeweler.

The event, scheduled for next month in New Orleans, will include dinner, a custom jewelry design contest, and education sessions.

The yet-to-be named stone is the 10th diamond weighing more than 1,000 carats to come out of Lucara’s Karowe mine.

The founder of Fords Jewelers, Berman is remembered for his love of connecting with his community.

The watch and jewelry retailer had a strong fiscal year despite what its CEO described as a “complex operating backdrop.”

The open-to-the-public luxury jewelry and timepiece show, in its second year, is slated for July 23-26.

Bold color, expressive gem-setting, and sculptural form define the three chapters that make up “Stile Libero.”

The New York-based jewelry brand has expanded overseas, opening a store in London’s Mayfair district.

Rising revenue does not automatically mean a healthy business, particularly in the current economic landscape, Smith writes.

These long, fluid drop earrings are sure to catch the eye.

Alberto Perez-Elias is one of four men charged with robbing a Cape Coral, Florida, jewelry store and is the only one still at large.

Initiatives in Art and Culture is hosting its 16th annual Gold and Diamond Conference, with the theme of “Resilience.”

The diamond miner and marketer is undergoing another round of cost-cutting measures ahead of its sale by Anglo American.

The annual trade-only buying event is slated for Oct. 16-19 in Miami Beach, Florida.

AGTA also has announced the lineup of judges for the colored gemstone cutting and jewelry design contest’s various categories.

Collectibles platform Arena Club’s new Time Boxes could contain a Rolex or Patek Philippe watch.

The “Constellation Plié” collar, our Piece of the Week, features diamonds arranged in a constellation of shining stars.

Shaun Wills joined the company in 2024 and was chief financial officer of the De Beers Brands and Consumer Markets division.
























