Gnome Crystal is a light model visualizer for crystal structures. I suggest app-sci/gcrystal.
Created attachment 37594 [details] gcrystal-0.6.1.ebuild
Didn't realize you were into crystallography, Matsuu. Are this and the related programs mature and ready to add?
last activity in 2004,also gcrystal is now part of gchemutils (in portage) should be closed
agreed