Gem

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Gem generally refers to a gemstone, a cut rock or mineral. It can also refer to:

Aircraft

• Rolls-Royce Gem, a helicopter engine made by Rolls-Royce

Computers and software

• A package format of the RubyGems package manager for the Ruby programming language library
• Graphical Environment Manager, a windowing system created by Digital Research
• GEM metafile for the Digital Research Graphical Environment Manager
• Graphics Execution Manager, a modern memory manager specialized for use in device drivers for graphics chipsets

Economy

• Growth Enterprise Market, a stock market for growth companies in Hong Kong

Insects

• Gem (moth), a moth of the family Geometridae

Music

• G.E.M., a Hong Kong Singer
• Gem (band), an indie rock band from the Netherlands
• Gem Archer, of British rock group oasis
• Gem, a group who performed in the 1981 Song for Europe, later renamed Paris, led by Andy Hill (composer)
• g.e.m., a project of Japanese singer-songwriter Megumi Hinata and Akimitsu Honma

Places

• Gem, California, a former settlement in the United States
• Gem, Indiana, a small town in the United States
• Gem, Kansas, a small town in the United States

Publications

• The Gem, an early 20th century British story paper

Scientific abbreviations

• Gemini (constellation); "Gem" is the standard astronomical abbreviation
• A geminal compound in chemistry
• Gas Electron Multiplier; A detector for ionizing radiation.
• "GEM" abbreviation for "German equatorial mount" in telescope Equatorial mounts

Ships

• USS Gem (SP-41), a United States Navy patrol vessel in commission from 1917 to 1919
• USS Gem of the Sea (1861), a United States Navy bark in commission from 1861 to 1865

Television

• "Gem," the 12th episode of the only season of the series The Inside; see List of The Inside episodes

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