English Dresden Diamond

The English Dresden diamond gets its name from Mr. E. H. Dresden the 19th century jeweler and diamond dealer of London, who purchased the 119.5 carat rough diamond discovered in the Bagagem district of Brazil in 1857, and subsequently forwarded it for processing to the renowned diamond cutting firm Messrs. Coster's of Amsterdam, who had previously earned the distinction of cutting the " Star of the South" diamond also discovered in Brazil, in 1853 and re-cutting of the most famous of all historic diamonds, the Koh-i-Noor, in 1852.

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http://www.internetstones.com/english-dresden-diamond-famous-jewelry.html

Image :
Maharajah Khande Rao Gaekwad's three-tiered diamond necklace, incorporating the cushion-cut "Star of the South" diamond and the pear-shaped "English Dresden" diamond below it, as the centerpiece of the necklace.