Answer: Madhya Pradesh & Andhra Pradesh
Notes: The correct answer is "Madhya Pradesh & Andhra Pradesh." Madhya Pradesh is known for the Panna diamond mines, which are among the most famous in India. Panna is often referred to as the "diamond city" of India. Andhra Pradesh also has important diamond deposits, particularly in the Golconda region, historically famous for its diamonds, including the Koh-i-Noor. India was historically a major diamond producer until the discovery of diamond mines in Brazil and South Africa.
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