Mark Bronner

Diamond Professional In New York City

About Mark Bronner

Early Life
Mark Bronner works as an experienced diamond dealer in the greater New York City area. He has been in the diamond business in the tri-state area for the past 20 years.

Mark Bronner was born and raised in the Philadelphia suburb of Downingtown, Pennsylvania along with his five siblings. Mark Bronner’s father was an economics professor at Penn and his mother worked at St. Joseph’s Hospital.

The Bronner boys knew the value of hard work. Starting in high school, all the Bronner boys worked construction at Daniel J. Keating full time when school was out.

Bronner enrolled at Malvern Prep, like his three older brothers. While his brothers played hockey and tennis, Bronner competed in football and lacrosse. He excelled in football, starting as a sophomore. Though lacrosse never came easy to Bronner, he broke out in his senior season and elected to play collegiately at the University of Deleware.

Mark Bronner majored in Business at the University of Delaware.


After graduation, Bronner got hired at Keating Construction, where he’d put in labor while in high school. Mark Bronner helped the company expand its footprint significantly and improved efficiency in a supply-chain management role. Bronner later was promoted to a management role. He worked in the acquisition of some smaller construction firms for Keating.

Bronner moved to a career in personal investing, noting his instinct to recognize sound business. He started by funding fast-food chains in the Philadelphia suburbs. Bronner diversified by getting into energy investments. Henry Wilson, a former teammate of Bronner at Deleware, approached Bronner with an opportunity to expand.

Together with Henry Wilson, Mark Bronner entered in the diamond business. At first, the pair operated exclusively in Philadelphia. Bronner expanded to the New York City area in the early 1990s.