Why India Forgot the Other Koh-i-Noors

One diamond became a symbol of British colonialism. But priceless other jewels ended up somewhere else entirely.

nader shah nadir shah
Nadir Shah on the peacock throne after his defeat of Muhammad Shah, c. 1850 (India). Source: San Diego Museum of Art, San Diego

Nikash Harapanahalli

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August 6, 2026

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13 min

During King Charles’s April 2026 visit to New York City, a journalist asked Mayor Zohran Mamdani what he’d say to the British ruler. Mamdani was blunt: give back the Koh-i-Noor. The diamond’s journey, from a Punjabi king’s surrender to a British crown, is a story most know.

But what we often forget is that the Koh-i-Noor was only a small part of a treasure trove of jewels stolen from India. Where are the rest today? The answer might surprise you: Iran. The country’s currency isn’t backed by gold, but partly by a vast collection of jewels, most of which were once looted from Delhi. So how did India’s pride become Iran’s treasury?

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