Why India is not claiming for Kohinoor Diamond ?
The history of the Koh-i-noor is long, complicated and bloody. It was acquired by the British as part of the treaty which ended the first Sikh war (one of the few colonial wars that the Britsh neither started nor provoked – the internal politics of the Punjab were rather messy at this time) in 1842 [note – this is from memory – check all dates, spellings etc before quoting me]. The diamond was never the property of the Sikh nation. It was the personal property of the Sikh ruler Ranjit Singh, and then briefly of his supposed heir Dalip (whose paternity was more than a little open to doubt, but never mind). Anyway, the Koh-i-noor was acquired as spoils of war. Ranjit Singh also acquired it as a spoil of war. He got involved in a dynastic dispute between three brothers disputing the throne of Afghanistan. His support was crucial to one brother (Shah Shuja), but when Ranjit claimed the K-i-N as payment, he was denied. So he locked his former ally and his family up in a room and denied them
