The “River of Heaven” necklace, our Piece of the Week debuting at Couture, combines 26 salt and pepper diamonds spaced by Tahitian pearls.
Irving Korwin, WWII Vet and Founder of Wideband, Dies at 99
He was known for his integrity, passion and knowledge, and was the oldest living member of the 24 Karat Club of the City of New York.

New York—Irving Korwin, a World War II veteran and founder of Wideband Coin Jewelry, died earlier this month of natural causes at his home in Paradise Valley, Arizona.
He was 99 years old.
Korwin was born on Aug. 18, 1920 in the Bronx, New York City, the son of Eastern Europeans who immigrated to the United States through Ellis Island.
He was raised during the Great Depression and entered World War II as an enlisted soldier right after the bombing of Pearl Harbor on Dec. 7, 1941.
He served with top-secret clearance, training pilots and military VIPs on the use of radar and radar countermeasures at a base in Florida. Radar was credited with serving a pivotal role in the eventual victory of the Allied forces in both the European and Pacific theaters.
His role in the war effort earned him the nickname “Radar Irv.”
In 1951, Korwin started Wideband Coin Jewelry in New York, a company known for its creative charms that sometimes incorporated coins and, later, specialized in fine karat gold jewelry.
Clients included Bergdorf Goodman in New York and B.C. Clark Jewelers in Oklahoma City.
He worked alongside his son and daughter-in-law, Richard and Sharyn Korwin, for years, and together they created jewelry for a number of famous Americans, including Elvis Presley and former President Dwight D. Eisenhower.
He was a longtime American Gem Society supplier member, a member of the American Numismatic Association—the nonprofit dedicated to the study and collecting of coins—and a 40-year member of the 24 Karat Club of the City of New York.
He was the club’s oldest member at the time of his passing.
Korwin retired from the jewelry industry in 1994 and moved to Boynton Beach, Florida with his wife, Shirley, who passed away in 2009.
He moved to Arizona in 2016 to be near his other son, Alan Korwin.
In 2017, he penned his first book, “The Autobiography of Irving Korwin.” All proceeds from the sale of the book benefit the USO.
As so many do in the industry, Korwin made a lot of friends along the way, and two of his closest were former National Jeweler publisher Milt Gralla, who died in 2012, and Morris Adwar, who passed away in 2018.
In a note to 24 Karat Club members,
“Each of you, in your own way, were special to him,” he wrote. “He will be missed.”
Korwin is survived by two sons and daughters-in-law, Richard and Sharyn, and Alan and Cheryl; four grandchildren, Arielle, Mariel, Spencer and Tyler; and four great-grandchildren, Calvin, Julius, Russell and Sloane.
Anyone wishing to express condolences to the family, or who wants to obtain a copy of Korwin’s book, can contact Richard at R.Korwin@verizon.net or Alan at Alan@gunlaws.com.
The Latest

The author, speaker, and entrepreneur will give his presentation, “Spiritual Billionaire,” on Saturday morning.

Three-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach on Sunday night.

As gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.

Signet will integrate the online-only, natural diamond-focused jeweler into Blue Nile, which it wants to position as a higher-end retailer.


These up-and-coming jewelry brands are bringing their distinct aesthetic and unique point-of-view to the Design Atelier for the first time.

The lab’s proprietary diamond cut grade has been expanded to include the popular fancy shape.

With the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.

This year, it’s what could happen outside of show hours that worries JSA Executive Vice President Scott Guginsky.

High-end fashion houses know how to emotionally connect with customers online. Retail jewelers should take note, Emmanuel Raheb writes.

The designers are the third cohort of mentees from the show’s Belonging @ Couture mentorship program.

Buying discipline at trade shows starts with clarity about your inventory levels, Smith writes.

The trade show’s education series returns, with sessions on retail trends, AI, watches, marketing, corporate responsibility, and more.

The Curated Designer Project has expanded to highlight eight independent jewelry designers during CBG’s Las Vegas show.

Bring a cool tone to your summer jewelry with these white metal pieces.

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

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.

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

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

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

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

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

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

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

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.

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

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.
























