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Arcthium gem

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The following section contains information from StarCraft II: Wings of Liberty that is ambiguously canonical.

Arcthium gems are the key to protoss technology. Just a few slivers of them can greatly increase energy regeneration in terran reactors.[1]


  1. 2014-08-30, Unused HoTS Story Elements. StarCraft Legacy, accessed on 2014-09-04

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