Koh-i-noor diamond was discovered in Indian in 1306 AD, and is kept for the public display in London. It is believed to be unlucky for all its men owners.
The controversial history of the Koh-i-Noor diamond
Kohinoor Display Gets 'Transparent' Makeover At Tower Of London
Why the Kohinoor diamond won't make an appearance at King Charles III's coronation
The Koh-i-Noor Mountain of light – VOON SILVER JEWELLERY
The True Story of the Koh-i-Noor Diamond—and Why the British Won't Give It Back, History
Koh-i-noor, Diamond, Controversy, & Facts
The Mountain of Light – Koh-i-Noor – The World's Most Famous Diamond – Antique Jewellery Online
Koh-i-Noor Diamond – Antique Jewelry University
The Fight Greater Than Just A Gem: The History of the Kohinoor Diamond – The Science Survey
Famous Diamonds: The Koh-i-noor
No ordinary diamond: how the Koh-i-Noor became an imperial possession