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Gem (disambiguation)

Last updated February 06, 2026

A gem , or gemstone, is a cut rock or mineral.

GEM (band), a Japanese idol girl group
Gem (American band), with Doug Gillard
Gem (Dutch band), a rock band
G.E.M. (Gloria Tang Sze-wing, born 1991), a Chinese singer and songwriter
- G.E.M. (EP), 2008
Gem (album), by Beni Arashiro, 2007
"The Gem", a song by Priestess from the 2009 album Prior to the Fire

GEM Motoring Assist, a British road safety and breakdown recovery organisation
G. E. M. Membership Department Stores, a chain of discount stores in the U.S. and Canada
Global Electric Motorcars, an American manufacturer of low-speed vehicles
GEM, musical instruments by Generalmusic
Global Earthquake Model, a public–private partnership to develop risk assessment software
Gordon–Evernham Motorsports, a NASCAR Busch Series race team
Grenoble École de Management, a French graduate business school

GEM (gene), GTP-binding protein
Gem, a format of the RubyGems package manager for Ruby
Gem, codename for the PlayStation Move controller
Gem, the game engine of Best Way
GEM of Egypt, a power shovel used for strip mining
Geminal, in chemistry
Gemini (constellation), in astronomy
Gas electron multiplier, a type of gaseous ionization detector
German equatorial mount, for astronomical telescopes and cameras
GEM (desktop environment) (Graphics Environment Manager), a software operating environment from Digital Research
GEM, a compiler backend created for DEC MICA and later used in OpenVMS and Tru64.
Graphics Environment for Multimedia, graphics software
Global Environmental Multiscale Model, a meteorological forecasting system
Globally Executable MHP, a DVB specification for TV
Graphics Execution Manager, video software
Graphite-Epoxy Motor, a series of solid rocket boosters
Gravitoelectromagnetism, formal analogies between the equations for electromagnetism and relativistic gravitation
Gyrokinetic ElectroMagnetic, a plasma turbulence simulation
SECS/GEM, semiconductor's equipment interface protocol for equipment-to-host data communications

Gem (automobile), by the Gem Motor Car Company 1917–1919
Rolls-Royce Gem, a helicopter engine
Gem 4/4, a Rhaetian Railway locomotive class
Ground effect machine (GEM), a hovercraft
USS Gem (SP-41), a U.S. Navy patrol vessel 1917-1919
GM GEM platform, Global Emerging Markets automotive platform used by General Motors

Gem (moth), of the family Geometridae
Billbergia 'Gem', a hybrid cultivar
Gem, the most common paper clip design
Gender Empowerment Measure, an index designed to measure of gender equality
Generalized Expertise Measure, a psychometric measure of expertise
The Germanic languages (ISO 639-1 code gem)
Global Entrepreneurship Monitor, a research project into entrepreneurial activity
Grand Egyptian Museum, or the Giza Museum, a museum of artifacts of ancient Egypt
Growth Enterprise Market, a board of the Stock Exchange of Hong Kong