There used to be a box in Golkonda Fort where the famous diamonds Koh-i-Noor and Hope were once preserved along with other diamonds. Golconda is famous for the diamonds found near Kolur Mine near Kolur, Guntur District in the south, Pretala in Krita District and Atkur near Atkur and was mined in this city during the Kakatiya period. At that time, India had the only diamond mines in the world. Golkonda was a diamond market, and the jewelery sold there came from various mines. The city of forts was famous for its diamond trade within the walls. Its name has taken on a general meaning and is associated with great wealth. Experts use this classification for diamonds with a complete (or almost-complete) deficiency of nitrogen. The substance is also called "Golkanda".
Many famous diamonds are believed to have been mined from Golconda mines, such as:
Wittelsbach - Graph Diamond
Daria Noor Heera
Koh Noor Noor Heera
Until the 1880's, "Golconda" was commonly used by English speakers to refer to a particularly wealthy ear, and later to a wealthy source.
During the Second and Early Modern Era, the name "Golkanda" became a popular myth and became synonymous with vast wealth. These landmines enriched the Qutb Shahis of the state of Hyderabad, who ruled Golkonda until 1687, then the Nizam of Hyderabad, which ruled from 1948 to 1948 after independence from the Mughal Empire, when India in Hyderabad Merged