Note: Do not rely on this information. It is very old.
Golconda
Golconda, a fortified town in Hindostan, seven miles north-west of Hyderabad. It was formerly the capital of a kingdom of the same name, but is now the chief town of the Nizam's dominions. There were gold and diamond mines in the neighbourhood of the city, and the latter were cut and polished at Golconda.