Editing Koh-i-Noor (section)

=== In Gulab Singh's possession ===
[[File:Gulab Singh riding on elephant.jpg|thumb|[[Maharaja]] Gulab Singh riding on elephant.]][[File:A painting from 1843 depicting the Lahore Darbar of the Sikh Empire under Maharaja Duleep Singh.jpg|thumb|Sikh Empire under 5 year old Maharaja [[Duleep Singh]]. To the right is Suchet Singh and to the immediate left is Maharaja [[Gulab Singh]] of [[Jammu and Kashmir (princely state)|Jammu and Kashmir]], who ultimately wielded influence over the Koh-i-Noor, and its transfer to the United Kingdom.]]
On 8 October 1839, the new emperor Kharak Singh was overthrown in a coup by his prime minister Dhian Singh. The prime minister's brother [[Gulab Singh]], [[Raja]] of [[Jammu]], came into possession of the Koh-i-Noor.<ref>{{Cite book|url=https://books.google.com/books?id=7dymBAAAQBAJ&q=koh+i+noor+dogra&pg=PT121|title=The Koh-i-noor Diamond|last=Amini|first=Iradj|date=2013-06-01|publisher=Roli Books Private Limited|isbn=978-93-5194-035-7}}</ref> Kharak Singh later died in prison, soon followed by the mysterious death of his son and successor [[Nau Nihal Singh]] on 5 November 1840. Gulab Singh held onto the stone until January 1841, when he presented it to emperor [[Sher Singh]] in order to win his favour,<ref>{{Cite book|url=https://books.google.com/books?id=P4bNDUFhI9IC&q=gulab+singh+koh+i+noor&pg=PA166|title=History of Koh-i-Noor, Darya-i-Noor, and Taimur's Ruby|date=1985|publisher=Atlantic Publishers & Distri}}</ref> after his brother [[Dhian Singh]] negotiated a ceasefire between Sher Singh and the overthrown empress [[Chand Kaur]]. Gulab Singh had attempted to defend the widowed empress at her fort in Lahore, during two days of conflict and shelling by Sher Singh and his troops.<ref>{{Cite book|url=https://books.google.com/books?id=HBOMDwAAQBAJ&q=chand+kaur+gulab+singh+fort&pg=PA177|title=Emperor of the Five Rivers: The Life and Times of Maharajah Ranjit Singh|last=Sheikh|first=Mohamed|date=2017-03-17|publisher=Bloomsbury|isbn=978-1-78673-095-4}}</ref> Despite handing over the Koh-i-noor, Gulab Singh as a result of the ceasefire returned safely to Jammu with a wealth of gold and other jewels taken from the treasury.<ref>{{Cite book|url=https://books.google.com/books?id=OzZzFm4pLWQC&q=chand+kaur+jammu&pg=PA185|title=Advance Study in the History of Modern India (Volume-2: 1803-1920)|last=Chhabra|first=G. S.|date=2005|publisher=Lotus Press|isbn=978-81-89093-07-5}}</ref>

==== Worn by child emperor Duleep Singh ====
On 15 September 1843, both Sher Singh and prime minister Dhian Singh were assassinated in a coup led by [[Ajit Singh Sandhawalia]]. However, the next day in a counter coup led by Dhian's son Hira Singh the assassins were killed. Aged 24, Hira Singh succeeded his father as prime minister, and installed the five-year old [[Duleep Singh]] as emperor. The Koh-i-noor was now fastened to the arm of the child emperor in court at Lahore. Duleep Singh and his mother empress [[Jind Kaur]], had till then resided in Jammu, the kingdom governed by Gulab Singh.<ref name=":1">{{Cite book|url=https://books.google.com/books?id=EoJoDwAAQBAJ&q=Koh-i-Noor+sher+singh&pg=PA115|title=Kohinoor: The Story of the WorldÕs Most Infamous Diamond|last1=Dalrymple|first1=William|last2=Anand|first2=Anita|date=2016|publisher=Juggernaut Books|isbn=978-93-86228-08-6}}</ref>

Following his nephew Prime Minister Hira Singh's assassination on 27 March 1844, and the subsequent outbreak of the [[First Anglo-Sikh War]], Gulab Singh himself led the Sikh empire as its prime minister, and despite defeat in the war, he became the first [[Maharaja]] of [[Jammu and Kashmir (princely state)|Jammu and Kashmir]] on 16 March 1846, under the [[Treaty of Amritsar (1846)|Treaty of Amritsar]].