Sergio (Portuguese: Carbonado do Sérgio) was the largest
carbonado
Carbonado, commonly known as black diamond, is one of the toughest forms of natural diamond. It is an impure, high-density, micro-porous form of polycrystalline diamond consisting of diamond, graphite, and amorphous carbon, with minor crysta ...
and the largest rough
diamond
Diamond is a Allotropes of carbon, solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the Chemical stability, chemically stable form of car ...
ever found.
It weighed and was found above ground in
Lençóis
Lençóis is a municipality in the state of Bahia in Brazil. The population is 11,499 (2020 est.) in an area of 1277 km². The town has a well-preserved colonial atmosphere and is the starting point for treks into Chapada Diamantina
Chap ...
(State of
Bahia
Bahia ( , , ; meaning "bay") is one of the 26 Federative units of Brazil, states of Brazil, located in the Northeast Region, Brazil, Northeast Region of the country. It is the fourth-largest Brazilian state by population (after São Paulo (sta ...
,
Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
) in 1895 by Sérgio Borges de Carvalho. Like other carbonados, it is believed to be of
meteoritic origin.
/ref>
''Sergio'' was first sold for $16,000 and later for 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 . It was then broken up into small pieces as industrial diamond drills.
See also
* List of diamonds
Diamond (gemstone), Diamonds become famous typically for some combination of their size, color and quality. Diamonds occur naturally in many different colors, so the largest diamond of a particular color may not be large in absolute terms, but it ...
* List of largest rough diamonds
This is a partial list of the largest non-synthetic diamonds with a rough stone (uncut) weight of over 200 carats (40 grams). The list is not intended to be complete – e.g., the Cullinan (formerly Premier) mine alone has produced 135 diamond ...
References
Diamonds originating in Brazil
1895 in Brazil
Individual diamonds
Black diamonds
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