RAPAPORT… Mark Cohen, the co-owner and designer at wholesale jewelry
brand J.J. Marco, passed away on May 27 at the age of 63.
Cohen and his wife, Julianne Jaffe, founded the company in
1990. They ran it for 15 years as a jewelry wholesaler, supplying to clients such
as Neiman Marcus, Saks Fifth Avenue, and the Metropolitan Museum of Art. The
pair opened a retail location on New York’s Madison Avenue in 2005, and Cohen
also designed custom pieces for customers.
Cohen learned the business by working as a bench jeweler in
his father’s fine-jewelry workshop. He earned an art degree from Pratt
Institute.
“He was a wonderful photographer and sculptor, as well as a
jewelry designer,” said Jaffe. “But the first thing everyone noticed about him
was what an incredibly thoughtful, kind, generous person he was.”
In addition to his wife, he is survived by his children,
Stefanie and Jeremy.
Image: Mark Cohen. (Julianne Jaffe)
Designer Mark Cohen Dies at 63
The Bottom Line
- Mark Cohen co-founded J.J. Marco in 1990 with his wife, Julianne Jaffe, operating as a wholesale jewelry supplier for 15 years.
- The company served major clients including Neiman Marcus, Saks Fifth Avenue, and the Metropolitan Museum of Art before opening a retail store on Madison Avenue in 2005.
- Cohen was also a custom jewelry designer and had a background as a bench jeweler and an art degree from Pratt Institute.
Summary by Rapaport AI
More Stories

Namibia Authorities Investigate Allegations About Corruption in Diamond Sector
Brilliant Star denies activist’s allegations about it; De Beers terminates company’s sight following separate review.

Shai Schnitzer Becomes Third Generation of Family to Head IDE
His grandfather, Moshe Schnitzer, and father, Shmuel Shnitzer, both served as president.

Romanov Sapphire Sails Past Estimate to Score $5M at Sotheby’s
Auction house originally predicted Cartier bracelet would bring in up to $2 million.
