Crystal structure of <a href="https://en.wikipedia.org/wiki/Gallium(III)_oxide" class="extiw" title="en:Gallium(III) oxide">β-Gallium oxide</a>
<a href="//commons.wikimedia.org/wiki/User:Orci" title="User:Orci">Orci</a>
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<span class="int-own-work" lang="en">Own work</span>, data source: J. Åhman, G. Svensson and J. Albertsson: A Reinvestigation of β-Gallium Oxide. In: Acta Cryst. (1996). C52, 1336-1338.