Koh-i-Noor: The History of the World's Most Infamous Diamond Koh-i-Noor: The History of the World's Most Infamous Diamond Koh-i-Noor: The History of the World's Most Infamous Diamond is a 2017 book on the Koh-i-Noor diamond written by William Dalrymple and Anita Anand. The gem is one of the largest cut diamonds in the world, weighing , and part of the British Crown Jewels. Koh-i-Noor is Persian for "Mountain of Light"; it has been known by this name since the 18th century. It changed hands between various factions in modern-day India, Pakistan, Iran, and Afghanistan, until being ceded to Queen Victoria after the British conquest of the Punjab in 1849.
French Crown Jewels diamond cut in 1678 for Louis XIV and above all the Regent Diamond. The treatment of the Regent Diamond epitomised the attitude of the French Royal Family to the Crown Jewels. While the Regent Diamond was the centrepiece of the King Louis XV crown, and worn by him at his coronation in February 1723, Marie Antoinette, wife of Louis XVI, wore it in a black velvet hat. The Royal French Blue was transformed into the Hope Diamond now in the Smithsonian Institution in Washington, D.C.. With two remaining jewels of the Renaissance, the "Côte-de-Bretagne" red spinel and the "Dragon perle",