On March 29, 1849, after the end of the Second Anglo-Sikh War, the Kingdom of Punjab formally annexed the Company's rule, and the last treaty was signed at Lahore, officially transferring Koh-i-Noor to Queen Victoria and the Maharaja. Other assets to the company. The article of the treaty stated: "The money called Koh-i-Noor, which was taken by Maharaja Ranjit Singh from Shah Suja I Mulk, will be handed over by the Maharaja to the Queen (ski) of England." .
The main signatory of the agreement for 11-year-old Maharaja Dilip Singh was his Commander-in-Chief, Thaj Singh, a loyalist of Maharaja Gulab Singh, who was formerly in possession of Koh-i-Noor and had acquired Kashmir from Kashmir. After the First Anglo-Sikh War, by agreement with the Sikh Empire, Britain.
The Marquis of Dalhousie was in charge of ratifying the agreement. Some of his contemporaries in Britain also criticized the way he helped diamond transfer. Although some thought it should have been presented as a gift by the East India Company to Queen Victoria, it is clear that Dalhousie believed it was a stone's throw, and was treated accordingly. Ensuring that he was formally handed over by Dilip Singh. , Ranjit Singh's youngest son. The presentation of the Queen of Koh-i-Noor by the East India Company was the latest in a long history of diamond transfers with the lure of war. Dilip Singh was placed under the tutelage of Dr. John Login, a British Army surgeon serving in the Presidency of Bengal. Dilip Singh will move to England in 1854