The 16th-18th centuries were the peak period of the Golconda diamond industry, with 23 mines in the region (of which Kollur Mine was the most active) and 30,000 people working at a time in one mine, The output from all the mines in Golconda was estimated to be around 10,000,000 carats (2.0 t). Some of the world's most famous Golconda diamonds are: the colourless Koh-i-Noor, the Nassak Diamond, the blue Hope Diamond, the Idol's Eye, the pink Daria-i-Noor, the white Regent, the Dresden Green, and the colourless Orlov, as well as now-untraceable diamonds such as the Florentine Yellow, the Akbar Shah, the Nizam and the Great Mogul. Due to centuries of excessive mining, the Golconda diamond production has been exhausted since 1830 AD, therefore gemologists and traders have classified Golconda diamonds as antique, rare, and precious. The word "Golconda diamond" became symbolic of diamonds of incomparable quality.įor 2000 years Golconda diamonds were the only known fine diamonds in the world. They are often described as diamonds of the first water, making them among history's most celebrated diamonds. Golconda diamonds have distinctive characteristics: they are graded as Type IIa, formed of pure carbon, are devoid of nitrogen, and are large in size with high clarity. Golconda Fort, located in the western part of modern Hyderabad, was a seat of the Golconda Sultanate and became an important center for diamond enhancement, lapidary and trading. Golconda diamonds are diamonds mined in the geographic area known as the Godavari delta in the present-day Indian states of Andhra Pradesh and Telangana. Kollur mine, Paritala and mines of Godavari delta Typically colorless less often blue, translucent white, and pink. A 1733 map of Golconda Sultanate-the term Golconda diamond became synonymous to the diamonds of good quality.
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