Sergio (carbonado)
# Sergio (carbonado)

The Sergio (Portuguese: Carbonado do Sérgio) was the largest carbonado and the largest rough diamond ever found. It weighed 3,167 carats (633.4 g; 20.36 ozt) 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.

The Sergio was first sold for $16,000 and later for $25,000 (equivalent to $879,400 in 2022) 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 (equivalent to £786,474 in 2021). It was then broken up into small 3–6-carat (0.60–1.20 g; 0.021–0.042 oz) pieces as industrial diamond drills.

