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Eight-Sided: Octahedron
Octahedral Mixup I Plus CubeA Mixup Cube in shape of Greenhill's Octahedron
Octahedral Mixup II CubeA Mixup Cube in shape of Trajber's Octahedron
Octahedron 2x2x2A non-platonic 2x2x2

Octahedron 3x3x3 aka Greenhills octahedronAnthony Greenhill's octahedron build-up of a 3x3x3 cube.
Octahedron 4x4x4The concept of Greenhills Octahedron adapted to a 4x4x4.
Octahedron 7x7x7A 7x7x7 in shape of an octahedron.

Octahedron AxisA 3x3x3 was transformed into an Axis Cube which was transformed into an octahedron.
Octahedron StarminxA Starminx I in shape of an octahedron
Octahedron WindmillA Trajbers Octahedron twisted by several degrees along its main axis.

OctahinxA Megaminx in shape of a octahedron.
OctaminxA fairly accessible custom build based on the Pyraminx.
OctanovaA skewb octahedron with a 10-piece-circle at every edge.

OctaStar IIThe successor of the 24-Octahedron. A hybrid puzzle that adds faceturning abilities to the Little Chop.
Okki (a.k.a. Gem) (a.k.a. Pyradiamond)A 2x2x2 in octahedral form.
Okki Gem I (aka Alexanders Gem)A sticker variant of the Okki which transforms the puzzle back into a puzzle equivalent to the 2x2x2. Produced in East Germany but often customly remade.

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