[2][3] She has worked in the fields of art, architecture, crafts, historic preservation, fashion, and public policy in the U.S. She is the author of 24 books, numerous articles and essays, and recipient of many honors and awards.

On July 28, 2013,[18] during the 60th anniversary commemorations of the signing of the armistice that ended the Korean War, a U.S. monument was dedicated in the United Nations Cemetery in Busan, South Korea.

In 2004, The Slovak Republic's Ministry of Foreign Affairs decorated her for "her remarkable personal contribution to the development of a civil society in Slovakia.

In 2008, she received the Lifetime Achievement Award from Partners for Livable Places in Washington, D.C.[25] In 2008, together with Murakami and Julian Schnabel, she was named a "Legend" by Pratt Institute.

[27] In October 2010, Duke University initiated the Diamonstein-Spielvogel Visiting Filmmaker Series to address significant contemporary topics of social, political, economic, and cultural urgency from a global perspective.

[39] On September 14, 2016, she received the Annual Preservation Award from the American Friends of the Georgian Group,[40] and on November 19, 2016, was honored at the ArtsWestchester Gala "Celebrating Women".

[41] She and her husband, Ambassador Carl Spielvogel, were honored by The Acting Company with The Joan Warburg Humanitarian Award on November 12, 2018,[42] and by the Clarion Society, on March 5, 2019, for their leadership in the arts.

[2] In January 2023, she was the recipient of the Dr. Jan Papanek Medal, one of the highest honors accorded by the government of the Slovak Republic, given to individuals who have contributed significantly to promoting values of freedom, democracy, and human rights, and as an appreciation of her long-term support of Slovakia and its active role within the United Nations.

[4] Diamonstein-Spielvogel served as an interviewer/producer for seven television series about the arts, architecture, design, crafts, and public policy for the Arts & Entertainment Network, and other programs for national networks including CBS, NBC, WNET, Metromedia, WNYC Television, and major stations in Boston, Washington, Philadelphia, Los Angeles, Chicago, and Miami.

Diamonstein-Spielvogel has also been a contributing author to publications including The New York Times, Vogue, Ladies Home Journal, Harper's Bazaar, the Partisan Review, Art News, and many others.

The latter supplement became the basis of her first book (1972) entitled Open Secrets,[6] in which 94 accomplished and professional women respond to questions about issues they face in the modern world.

She has shared her combined experience and scholarship on art, architecture, photography, crafts, interior design, fashion, and public policy through her authorship of twenty-four books and numerous articles and essays.

These publications included her work as a fellow of the Architectural League, Collaborations: Artists and Architects,[7] subsequently the subject of an important museum exhibit, which resuscitated this significant and long moribund relationship.

[46][47] Among her other significant publications are the 1972 article in Ms. Magazine (newly-relevant and reprinted in January 2022) entitled "We have had abortions," a statement intended as a declaration of allegiance and sisterhood, to avoid stigma while fostering community.

Other work related to her writing projects included a series of Forums for the publishing company McCall Corporation (1967-1968), which she initiated and convened.

Diamonstein-Spielvogel is the curator of several international traveling exhibitions, including one based on "The Landmarks of New York", which was circulated to 82 countries on 5 continents, in an unprecedented tour sponsored by the U.S. Department of State.