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

Anne Hathaway was seen wearing the toggle necklace three times while filming scenes for “The Devil Wears Prada 2.”

Jewellery & Gem World Hong Kong is scheduled for Sept. 15 to 21, and buyer pre-registration will be available until Sept. 7.

Renovations at Tiffany & Co. stores ate into profits in the company’s watch and jewelry division.

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

Mark and Candy Udell of London Jewelers will receive the honor at the 24th annual Gem Awards next March.


While struggles continue at the mining and trading end of the pipeline, consumer demand for diamond jewelry is holding steady.

The “Fantasia” jewelry collection turns the intaglio animals from her “Close Encounters” collection into 3D characters.

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

The special Classic Avi Chronograph 42 with an Eagles-green dial is limited to 59 pieces, a nod to the Super Bowl Philadelphia just won.

JSA has received reports of mobs swarming jewelry stores, driving cars into the storefront or smashing through the windows.

The “Kashmir” collection features centuries-old craft techniques made in collaboration with the region’s master papier-mâché artisans.

Creative Director Erica Bianchini shared why the jeweler is looking to expand into the U.S. and how it’s putting Canadian craftsmanship on the map.

Two Los Angeles Fire Department stations plan to use the donations to upgrade their equipment and tools.

Next week, the auction house will kick off a selling exhibition of jewelry by British artist Hannah Martin and Coldplay’s Guy Berryman.

“Stolen: Heist of the Century” is based on “Flawless,” the book about the middle-of-the-night theft, and will debut on Netflix in August.

Emmanuel Raheb shares the top five gifting moments outside of major holidays that jewelers should build marketing campaigns around.

The wholesale trade show’s Luxury Lifestyle section will showcase established and emerging jewelry designers.

As demand for custom jewelry grows, the company is expanding its services to support retailers.

The mid-year conference for jewelry and watch appraisers is slated for Aug. 9 to 10 on Zoom.

Graduated stones make for elevated tennis-style pieces and dramatic statement necklaces.

Nominations in the categories of Jewelry Design, Media Excellence, and Retail Innovation will be accepted through July 30.

He retired last month after 28 years traveling the world to source the very best gemstones for his family’s jewelry business, Oscar Heyman.

The charm necklace features six nautical charms of shells and coral that founder Christina Puchi collected on Florida’s beaches.

The organization elected its youngest vice president as it looks to draw in fresh talent.

Campbell joins the company as vice president of business development while Liebler is the new vice president of operations.

The medals feature a split-texture design highlighting the Games’ first time being hosted by two cities and the athletes’ journeys.

Sponsored by The INSTORE Jewelry Show 2025