The 9.51-carat fancy vivid blue diamond, which set two world auction records at Sotheby’s in 2014, is estimated to fetch up to $30 million.
Steven Rosdal, Co-Founder of Hyde Park Jewelers, Dies at 77
He is remembered for his charisma, passion, integrity, kindness, and wit.

He suffered from neuroendocrine pancreatic cancer, however, his son Aaron Rosdal attributed Rosdal’s death to a combination of factors, according to BusinessDen.
Rosdal was born in 1946 in New York, where he was raised by his mother, Gloria Rosdal.
He graduated from Cornell University with a bachelor’s degree in economics and went on to work on Wall Street.
With only $1,500 to his name, he decided to move west, where he learned about the Native American jewelry trade and fell in love with the business, according to his online obituary.
He was a journeyman jeweler for a few years before opening Hyde Park Jewelers in 1976 with his long-time business partner, Michael Pollak.
In 2006, he sold his stake in the company and later opened SHR Jewelers.
Outside of work, Rosdal enjoyed riding his Harley with his “biker gang,” playing poker, traveling, trading stocks, talking politics, and watching the Denver Nuggets.
He also enjoyed giving back to the community and mentoring the next generation of leaders.
The thing Rosdal loved most was being with his family and friends, who remember him for his charisma, passion, integrity, kindness, and wit.
He is survived by his son, Aaron, and his wife Emily; his grandchildren, Elijah and Emmanual; his brother, Richard; his nephews, Jacob and Jared; and his former wife and lifelong friend, Lynn.
His funeral service will be held at 1 p.m. on April 11 at Temple Emanuel in Denver, followed by a burial at Emanuel Cemetery.
A livestream will be available on Feldman Mortuary’s YouTube channel.
In lieu of flowers, the family encourages contributions in honor of Rosdal to Denver Health Foundation, the Museum of Tolerance Jerusalem, which can be reached at info@motj.org, and Gastrointestinal Research Foundation.
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