The largest known fancy vivid blue-green diamond could fetch more than $12 million at its second auction appearance.
Longtime D.C. Jeweler Brian Mann Dies at 70
Mann, whose family’s jewelry store was located inside the Pentagon, is remembered for being a thoughtful champion of the industry.

He was 70.
Mann was born May 2, 1954, in Washington, D.C., to the late Natalie Kaplan and David Mann. He had two older brothers, Conrad Mann and Evan Mann.
Their father, David, started the business that eventually became David Mann Jewelers in 1946 as a watch store and repair shop, later adding jewelry.
Brian’s wife of 48 years, Jessie Mann, told National Jeweler on Thursday that Brian started helping out around the store when he was a kid.
After David died suddenly in the mid-1960s, a gentleman was brought in to help the family matriarch, Natalie, run the business until Conrad graduated from college and took over.
Brian, younger than Conrad by six years, followed him into the business several years later.
“He loved everything [about the jewelry business],” Jessie said of her husband. “He loved helping people with their repairs, he did a lot of engraving in the store.
“He just loved the interactions with people the most.”
She added that he always said his customers, who were members of the U.S. military, were the “best customers in the world.”
In a 2011 article in Forbes, Brian recounted what surely was one of the most unforgettable days of his career—Sept. 11, 2001.
He described what it was like to be in the Pentagon on 9/11 and how doing business in the building changed afterward, sharing that Valentine’s Day became a “mini-Christmas” for the store.
He reiterated the importance of the love-focused holiday in a 2019 National Jeweler article about the impact of the month-long government shutdown on D.C.-area jewelers.
“We have always had a strong Valentine’s Day business; we always call it our little Christmas rush. Let’s hope for one again this year,” he said in an email to National Jeweler .
David Mann Jewelers was a longtime member of Jewelers of America.
Brian was on JA’s board of directors from 2010-2016 and on the board of JA’s political action committee, known as JAPAC, from 2012 to 2023.
He also served as president of Maryland-Delaware-Washington, D.C. Jewelers Association from 1996 to 1998.
“Brian was one of the most thoughtful people whom I have had the pleasure to work with,” JA Director of Public Relations and Events Amanda Gizzi said.
“He was a champion for our industry and for Jewelers of America. He was always the first to reach out to wish you well for special occasions or holidays.”
On a personal level, Brian enjoyed collecting watches and watching classic movies, as well as watching the modern independent films his daughter, movie producer Lauren Mann, makes.
He also loved cats.
“He was a wonderful husband, a wonderful father,” Jessie said. “[He was] thoughtful, kind, and honest—a very honest person. Everybody who met him liked him.”
Brian and Conrad retired at the end of 2023, with the store officially closing on Dec. 22, 2023, after 78 years in business.
Brian is survived by his wife, Jessie; his daughter, Lauren; his son, Alexander Parker Mann and his wife Anne; and his brothers, Conrad and his wife Sondra, and Evan and his wife Claire.
Services were held in late June in Rockville, Maryland.
Contributions in Mann’s memory may be made to the American Heart Association.
The Latest

Emmanuel Raheb says jewelers need to start marketing early and make it easy for customers to pick a gift for mom.

The trade organization, which held its annual elections earlier this year, also added five new board members.

Gain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.

NRF’s annual survey found that 45 percent of consumers plan to purchase jewelry for a loved one this Mother’s Day.


The “Vault” charm, our Piece of the Week, expands on the memories that can be stored in a locket by connecting to your phone.

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

Gain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.

Sponsored by Jewelers Mutual

The proposed agreement follows the moissanite maker’s Chapter 11 bankruptcy protection filing last month.

The Patek Philippe for Tiffany & Co. timepiece Astor brought aboard the ill-fated ship sold for double its estimate at a Freeman’s auction.

The “Dalí’s Garden” collection was inspired by a surreal dream Neeley had after cooking a recipe from Salvador Dalí’s 1973 cookbook.

Natalie Feanny has been appointed to the role.

The pair falsely claimed their jewelry was made by Navajo artists, but it was imported from Vietnam.

Julien’s Auctions is selling the musician’s fine and fashion jewelry alongside her clothing, gold records, and other memorabilia.

Rachel King’s book dives into the history of the pendant believed to have belonged to Henry VIII and his first wife, Katherine of Aragon.

The company will have deals on precious metals testers as well as the latest in lab-grown diamond detection technology and security.

Gabrielle “Coco” Chanel is a character in the “Coco Game” collection of watches and the queen in its first haute horlogerie chessboard.

The annual list honors rising professionals on the retail and supply sides of the jewelry industry.

Seized in Kentucky, the packages include fake Cartier, Tiffany & Co., Chanel, and Fendi jewelry.

Rodolfo Lopez-Portillo faces 25 years to life in prison after being found guilty in the March 2022 beating death of Arasb Shoughi.

“Jewelry Creators: Dynamic Duos and Generational Gems” highlights the relationships among 22 influential designers, brands, and gem dealers.

The AJS Spring 2027 show will be held in Savannah, Georgia, with future shows taking place in other Southeast cities.

The jewelry retailer plans to open 20 new stores this year and expand into new product categories.

Flower motifs are the jewelry trend blooming amongst the new collections that debuted this spring.

The retailer reported an 8 percent decline in annual sales as it struggles under the weight of billions of dollars of debt.

The “Devil” drop earrings, our Piece of the Week, are part of designer Edina Kiss’ new namesake jewelry line that she will show at Couture.






















