I think you may be mistaking them for a different type of puzzle with diamond shape & similar look. As far as I know,there are two possible variants of similar

I think you may be mistaking them for a different type of puzzle with diamond shape & similar look. As far as I know,there are two possible variants of similar looking Octahedron shaped puzzles: 1) Face turning octahedron (the ones I've currently defined in the project) 2) Axis turning octahedron (on which you can twist around axis)