Golconda Fort, also known as Golla konda, is a fortified citadel built by the Kakatiyas and an early capital city of the Qutb Shahi dynasty, located in Hyderabad, Telangana, India. Because of the vicinity of diamond mines, especially Kollur Mine, Golconda flourished as a trade centre of large diamonds, known as the Golconda Diamonds. The region has produced some of the world's most famous diamonds, including the colourless Koh-i-Noor, the blue Hope, the pink Daria-i-Noor, the white Regent, the Dresden Green, and the colourless Orlov, Nizam and Jacob, as well as the now lost diamonds Florentine Yellow, Akbar Shah and Great Mogul.