The most ancient, historic case of this mistake is called the Timur Ruby
. In 1398, Tamerlane (Timur the Lame) went to India
. While in Delhi, he seized a large amount of jewels, among them a big ruby
of more than 350 carats. Centuries passed, fortunes changed hands, and at one point, this great ruby came into the possession of Emperor Shah Jahan of India, who built the Taj Mahal. Jahan also owned the famed Peacock Throne, with its 12 pillars, each decorated with two peacocks made from pearls, rubies, diamonds, sapphires
, and the enormous Timur Ruby. In 1851, Queen Elizabeth received a present from the East India Company. It turned out to be the infamous Timur Ruby. The stone was set into a necklace along with other gems, and became part of the crown jewels. Years later it was identified as one of the largest red spinels ever known. Spinel was actually only recognized as a mineral , not a ruby, a little over 150 years ago. The Black Prince’s ruby is actually spinel as well, and is found in the center of the British imperial State crown. This was a gift from Pedro the Cruel, the king of Spain, to the Black Prince, who is the son of Edward III of England, in 1367. The gift was given as thanks for his help in battle.