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This form shows a tetrahedron (o) with its edges beveled by the trigonal tristetrahedron (l), and its angles replaced by the rhombic dodecahedron.

Beveled Tetrahedron

This form shows a tetrahedron (o) with its edges beveled by the trigonal tristetrahedron (l), and its…

"...shows the rhombic dodecahedron in combination with the octahedron." -The Encyclopedia Britannica 1910

Combination of Rhombic Dodecahedron and Octahedron

"...shows the rhombic dodecahedron in combination with the octahedron." -The Encyclopedia Britannica…

A combination of a tetrahedron and a rhombic dodecahedron.

Combination of Tetrahedron and Rhombic Dodecahedron

A combination of a tetrahedron and a rhombic dodecahedron.

A tetrahedral combination.

Combination of Tetrahedron, Cube and Rhombic Dodecahedron

A tetrahedral combination.

"Right octahedron with rhombic base." — Hallock, 1905

Octahedron

"Right octahedron with rhombic base." — Hallock, 1905

"Right octahedron with rhombic base." — Hallock, 1905

Octahedron

"Right octahedron with rhombic base." — Hallock, 1905

"Oblique rhombic octahedron." — Hallock, 1905

Octahedron

"Oblique rhombic octahedron." — Hallock, 1905

"Right rhombic prism." — Hallock, 1905

Prism

"Right rhombic prism." — Hallock, 1905

An illustration of a combination formed by different prisms

Combination of Prisms

An illustration of a combination formed by different prisms

"Science has succeeded in classifying the thousands of known crystals in six systems, to each of which belongs a number of forms having some property in common. In order to classify these different crystals, the existence of certain lines within the crystal, called axes, is assumed, around which the form can be symmetrically build up. These axes are assumed to intersect in the center of the crystal, and to pass through from one side to the other." — Hallock, 1905

Rhombic Dodecahedron

"Science has succeeded in classifying the thousands of known crystals in six systems, to each of which…

A geometric shape containing twelve faces.

Rhombic Dodecahedron

A geometric shape containing twelve faces.

"Bounded by twelve rhomb-shaped faces parallel to the six dodecahedral planes of symetry. the angles between the normals to adjacent faces are 60 degrees...[and] 90 degrees; the indices are {110}" -The Encyclopedia Britannica 1910

Rhombic Dodecahedron

"Bounded by twelve rhomb-shaped faces parallel to the six dodecahedral planes of symetry. the angles…