There are at least three bands called GEM (or Gem): 1. GEM is a rock band from Utrecht, The Netherlands.
2. Gem is a 1990s band from Ohio with members from Guided By Voices, Doug Gillard and Tim Tobias.
3. ＧＥＭ (Girls Entertainment Mixture) are a Japanese idol group and are the 3rd group to stem from iDOL Street. Sister group of SUPER☆GiRLS and Cheeky Parade.
* * * 1. The four-piece rock band GEM from Utrecht, The Netherlands, was founded in 2003 and plays energetic rock, mixing grit with melody.