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Sergio (Portuguese: Carbonado do Sérgio) is the largest carbonado and the largest rough diamond ever found. It weighed a gigantic and was found above ground in Lençóis (State of Bahia, Brazil) in 1895 by Sérgio Borges de Carvalho. Like other carbonados it is believed to be of meteoritic origin.R.A. Ketcham, "''New textural evidence on the origin of carbonado diamond: An example of 3-D petrography using X-ray computed tomography''" Geosphere, GES00908.1, first published on August 14, 2013
/ref> ''Sergio'' was first sold for $16,000 and later for $25,000 to Joalheria Kahn and Co. and shipped to G. Kahn in Paris, who sold it to I. K. Gulland of London in September 1895 for £6,400. There, it was broken up into small pieces as industrial diamond drills.


See also

* List of diamonds * List of largest rough diamonds

References

Category:Diamonds originating in Brazil Category:1895 in Brazil Category:Individual diamonds Category:Black diamonds {{mineral-stub