Don't forget this Oppenheimer. I wonder if they're related?

"J. Robert Oppenheimer was born in New York City on April 22, 1904,[note 1][7] to Ella (née Friedman), a painter, and Julius Seligmann Oppenheimer, a wealthy textile importer. Born in Hanau, Hesse-Nassau, Prussia, Germany, Julius came to the United States as a teenager in 1888 with little resources, no money, no baccalaureate studies, and no knowledge of the English language. He was hired by a textile company and within a decade was an executive there and eventually became wealthy.[8] The Oppenheimers were both secular Ashkenazi Jews; his father was German Jewish, and his mother, who was from New York, descended from a German Jewish family that had lived in the U.S. since the 1840s.[9] In 1912, the family moved to an apartment on the 11th floor of 155 Riverside Drive, near West 88th Street, Manhattan, an area known for luxurious mansions and townhouses.[7] Their art collection included works by Pablo Picasso and Édouard Vuillard, and at least three original paintings by Vincent van Gogh."

J. Robert Oppenheimer, Atomic bomb, DOE - Department of Energy:

"The hearing that followed in April–May 1954, which was held in secret, focused on Oppenheimer's past Communist ties and his association during the Manhattan Project with suspected disloyal or Communist scientists.[200] It then continued with an examination of Oppenheimer's opposition to the H-bomb and stances in subsequent projects and study groups.[201] A transcript of the hearings was published in June 1954,[202] with some redactions. The US Department of Energy made public the full text of the transcript in October 2014."

https://en.wikipedia.org/wiki/J._Robert_Oppenheimer

Also, don't forget the New York City Diamond District:

"According to other sources, the district was home to more than 2,600 businesses in 2020, a majority of them were on the same block, many shop owners and managers of the district were Orthodox Jews.[9] The wholesale business made up most of the $24.6 billion in annual sales in 2019; the industry employed 33,000 people, still predominantly Jews."

https://en.wikipedia.org/wiki/47th_Street_(Manhattan)

I was in New York and strolled down the Diamond District. It's just one little shop after another. You also see a lot of Orthodox Jewish men walking along the street in that area, too. You won't get any deals there and are more likely to get ripped off unless you really know your diamonds and prices.