Nader never wished to rule India, just to plunder it for resources to fight his real enemies, the Russians and the Ottomans. Fifty-seven days later, he returned to Persia carrying the pick of the treasures the Mughal Empire had amassed over its 200 years of sovereignty and conquest: a caravan of riches that included Jahangir’s magnificent Peacock Throne, embedded in which was both the Koh-i-Noor diamond and the great Timur ruby.