A gem, or gemstone, is a cut rock or mineral.
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gem in Wiktionary, the free dictionary.
Gem or GEM may also refer to:
- "Gem", a 2006 episode of TV series The Inside
- The Gem, an early 20th-century British story paper
- Gem Theater, Deadwood, South Dakota, U.S., a 19th-century saloon
- Gem Theatre, Detroit, Michigan, U.S. Historic Place
- Gem TV (disambiguation), the name of several broadcasters
- Gem Archer (born 1966), English musician
- Harry Gem (1819–1881), English lawyer, soldier, writer and sportsman
United States
- Gem, Kansas
- Gem County, Idaho
- Gem, Indiana
- Gem, Ohio
- Gem, Texas
- Gem, West Virginia
- Gem Glacier, Glacier National Park, Montana
- Gem Valley, Idaho
- Gem Lake (Flathead County, Montana)
- Lake Gem (Florida)
- 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