<P> Babur, the Turco - Mongol founder of the Mughal Empire, wrote about a "famous" diamond that weighed just over 187 old carats--approximately the size of the 186 - carat Koh - i - Noor . Some historians think Babur's diamond is the earliest reliable reference to the Koh - i - Noor . According to his diary, it was acquired by Alauddin Khilji, second ruler of the Turko - Afghan Khilji dynasty of the Delhi Sultanate, when he invaded the kingdoms of southern India at the beginning of the 14th century . It later passed to succeeding dynasties of the Sultanate, and Babur received the diamond in 1526 as a tribute for his conquest of Delhi and Agra at the Battle of Panipat . </P> <P> Shah Jahan, the fifth Mughal emperor, had the stone placed into his ornate Peacock Throne . In 1658, his son and successor, Aurangzeb, confined the ailing emperor to Agra Fort . While in the possession of Aurangzeb, it was allegedly cut by Hortenso Borgia, a Venetian lapidary, reducing the weight of the large stone to 186 carats (37.2 g). For this carelessness, Borgia was reprimanded and fined 10,000 rupees . According to recent research the story of Borgia cutting the diamond is not correct, and most probably mixed up with the Orlov, part of Catherine the Great's imperial Russian sceptre in the Kremlin . </P> <P> Following the 1739 invasion of Delhi by Nader Shah, the Afsharid Shah of Persia, the treasury of the Mughal Empire was looted by his army in an organised and thorough acquisition of the Mughal nobility's wealth . Along with millions of rupees and an assortment of historic jewels, the Shah also carried away the Koh - i - Noor . He exclaimed Koh - i - Noor!, Persian for "Mountain of Light", when he obtained the famous stone . One of his consorts said, "If a strong man were to throw four stones--one north, one south, one east, one west, and a fifth stone up into the air--and if the space between them were to be filled with gold, all would not equal the value of the Koh - i - Noor". </P> <P> After Nader Shah was killed and his empire collapsed in 1747, the Koh - i - Noor fell to his grandson, who in 1751 gave it to Ahmad Shah Durrani, founder of the Afghan Empire, in return for his support . One of Ahmed's descendants, Shuja Shah Durrani, wore a bracelet containing the Koh - i - Noor on the occasion of Mountstuart Elphinstone's visit to Peshawar in 1808 . A year later, Shujah formed an alliance with the United Kingdom to help defend against a possible invasion of Afghanistan by Russia . He was quickly overthrown, but fled with the diamond to Lahore, where Ranjit Singh, founder of the Sikh Empire, in return for his hospitality, insisted upon the gem being given to him, and he took possession of it in 1813 . </P>

Who took away the kohinoor diamond from india