The Kohinoor Diamond is a large, colorless diamond that is believed to have been mined in India in the 13th century. 

It is considered one of the largest diamonds in the world, weighing approximately 106 carats. 

The name "Kohinoor" means "Mountain of Light" in Hindi and Urdu.

The history of the Kohinoor Diamond is long and complex, with the diamond changing hands many times over the centuries. 

It is believed to have originated in the Kollur mines in the Guntur district of Andhra Pradesh, India. 

From there, it passed through the hands of various rulers and conquerors, including the Mughals, the Persian ruler Nadir Shah, and the British East India Company.

In 1849, the British East India Company presented the diamond to Queen Victoria as a gift. It was subsequently set into the crown of Queen Mary, the consort of King George V, and is currently on display at the Tower of London as part of the Crown Jewels.

The Kohinoor Diamond is a type IIa diamond, which means it is almost completely devoid of impurities and has exceptional optical transparency. It is also considered a "D-color" diamond, which means it is completely colorless.

The diamond has been surrounded by controversy in recent years, with India, Pakistan and Iran all claiming ownership of the diamond.

 India has been particularly vocal in its demand for the return of the diamond, arguing that it was taken illegally by the British during colonial rule. 

However, the British government has stated that the diamond was obtained legally and has no plans to return it.

The Kohinoor Diamond is a large, colorless diamond that is believed to have been mined in India in the 13th century. 

It is considered one of the largest diamonds in the world, weighing approximately 106 carats. 

The diamond has passed through many hands over the centuries, and currently it is on display at the Tower of London as part of the Crown Jewels. 

The diamond has a long and complex history and it has been surrounded by controversies in recent years, with various countries claiming ownership.