Mega-Gem is an outdoor sculpture by American artist John Francis Torreano (born 1941). It is located on the Indiana University-Purdue University Indianapolis (IUPUI) campus, which is near downtown Indianapolis, Indiana, and is owned by the Indianapolis Museum of Art. The oversized sculpture, made of aluminum, is shaped like a round-cut diamond resting on one its facets and studded with 36 smaller, colored-metal rosettes.