Cullinan Diamond
The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing , discovered at the Premier No. 2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the mine's chairman.
Mega-Gem
"Mega-Gem" was fabricated in 1989 with the resources of Cincinnati art dealer Carl Solway. It was presented at the Chicago International Art Exposition, where it was located on the Navy Pier in Chicago, Illinois. The presentation of "Mega-Gem" was promoted through posters and buttons proclaiming the sculpture to be the largest diamond in the world, weighing over 360 million carats. "Mega-Gem" was considered by Torreano to be one of a series of "oxy-gem" sculptures, playing on the oxymoron of combining precious gems with materials of lesser value, such as a "plywood gem," "gold gem," and "Mega-Gem" as "aluminum gem." "Mega-Gem" is one of Torreano's oversized and exaggerated jewel sculptures.