In April 2026, during King Charles III's visit to New York City, Mayor Zohran Mamdani expressed his intention to lobby for the return of the Kohinoor diamond to India. The diamond, weighing 105.6 carats, has been in British possession since the mid-1800s, originating from Indian mines. India argues the gem was acquired through duress, framing its presence in London as a relic of colonial plunder. The UK maintains its legal claim under a 19th-century treaty, but the author argues this is invalid. The Kohinoor case is part of a wider movement for repatriation, including the Elgin Marbles and Benin Bronzes. The demand for artifact repatriation stems from historical injustices, where cultural objects were seized through force. The author highlights the Benin Bronzes, looted by British troops in 1897, and the ongoing struggle for their return. The British Museum's legal constraints have hindered the return of the Parthenon Marbles to Greece. The author notes that the pattern of repatriation is global and accelerating. The return of cultural objects is seen as a way to restore collective memory and a sense of self. The author argues that the British government's stance on the Kohinoor reflects a failure of moral imagination. The author believes that the Kohinoor will eventually return to India.