India's Diamonds of Golconda

Diamonds were discovered in India during the 4th century B.C., and India was one of the first countries to mine the gem. India's diamonds were prized for their size and beauty for hundreds of years. "Indian" diamonds were mined in numerous locations that included Borneo (Landak), Golconda, Hindostan, and Raolconda. The majority of India and Borneo's diamond deposits were alluvial as opposed to kimberlite.
India's most prized diamonds are known as the "diamonds of Golconda," and the most famous Golconda stones include the Hope Diamond, Koh-i-Noor Diamond, Orlov Diamond, and Sanc Diamond. The Darya-i-Nur (Sea of Light) was a rare blue-diamond weighed 186 carats, which was owned by the Nadir Shah of Persia after it was plundered from the last 'Great Mughal Emperor,' Aurangzeb's heirs in the 'sack of Delhi' in 1739.