This is the relevant information: The town of Karwan, near the fortress city of Golkonda, now a suburb of Hyderabad, became the world's largest diamond-cutting and diamond-trading center.
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Passage: The town of Karwan, near the fortress city of Golkonda, now a suburb of Hyderabad, became the world's largest diamond-cutting and diamond-trading center. Golconda was not close to diamond mines, but owed its status as a diamond center to its location on a major trade route from the mines to the south and east. The diamonds became known as Golconda Diamonds, and in Europe, the word Golconda came to mean a place of great wealth.

Question: Based on this passage, which place is famous for diamonds in india?
The town of Karwan , near the fortress city of Golkonda , now a suburb of Hyderabad