45+ The National Geographic Magazine 



i-rom George F. Kunz, U. S. Geological Survey 



Process of Breaking the Third Largest Piece of Carbon Ever Found. Weight, 

 75oj4 Carats ; Value, $23,600. Found in Brazil, 1901 



1. Outer half of the piece, showing a break diagonally across it. 2. Reverse (inner) side of 1, 

 showing three breaks, making five pieces of the half of the carbon 



