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1100 CE - 1300 CE: Possible period in which the Koh-i-Noor diamond was discovered in the Golconda mines in India.
1526 CE: Likely the first written reference to the Koh-i-Noor diamond in the memoirs of the Mughal emperor Babur.
1526 CE: An alternative theory suggests this date as when the Raja of Gwalior gave the Mughal emperors the Koh-i-Noor diamond.
1650 CE: An alternative theory that the Mughal emprors acquired the Koh-i-Noor diamond from the Kollur mines of the Krishna River.
1739 CE: The Persian leader Nader Shah acquires the Koh-i-Noor diamond after victory over the Mughal Empire and the capture of Delhi.
1747 CE: Ahmad Shah, founder of the Durani Dynasty of rulers in Afghanistan, acquires the Koh-i-Noor diamond.
1813 CE: Maharaja Ranjit Singh, ruler of the Punjab, acquires the Koh-i-Noor diamond.
1849 CE: Following victory in the Anglo-Sikh Wars and as part of the ensuing peace treaty, the British East India Company acquires the Koh-i-Noor diamond.
1850 CE: The Koh-i-Noor diamond is presented to Queen Victoria.
1851 CE: The Koh-i-Noor diamond is presented to the public at the Great Exhibition in London.
1852 CE: The Koh-i-Noor diamond is cut into an oval brilliant, reducing its weight from 186 to 105.6 carats.
1902 CE: The Koh-i-Noor diamond is set into the coronation crown of Queen Alexandra.
1911 CE: The Koh-i-Noor diamond is set into the coronation crown of Queen Mary.
1937 CE: The Koh-i-Noor diamond is set into the coronation crown of Queen Elizabeth, consort of George VI.