Roman Dodecahedron

Theories

Was the Roman Dodecahedron a Ritual or Fortune-Telling Object?

Key points

  • Most archaeologists think they were probably used in magical rituals, Live Science reports, though nothing is proven.[LS]
  • Scholars almost always note the dodecahedron's significance in classical philosophy.[W]
  • The Geneva zodiac die is the strongest link, but it is a different kind of object.[GE][GC]
Roman dodecahedra and the Arloff icosahedron at the Rheinisches Landesmuseum Bonn
Two dodecahedra and an icosahedron, Rheinisches Landesmuseum Bonn (2018). Photo: Kleon3, CC BY-SA 4.0, via Wikimedia Commons (resized).

The case for

ArgumentDetail
No written sourcesDivination was later forbidden under Christianity and punished severely, which might explain the silence, says curator Guido Creemers[LS]
Gallo-Roman distributionFinds cluster in the north-western, Gallo-Roman regions, many at burial sites (Tibor Grüll, cited by Live Science)[LS]
Deliberate breakingThe Kortessem fragment may have been broken in a final ritual[LS]
Zodiac dieGeneva's 4th-century dodecahedron carries the zodiac names[GE]
PhilosophyPlato associated the dodecahedron with the heavens[MF][W]

The case against

No source links any bronze dodecahedron directly to a ritual. The Geneva piece is unique in material and decoration, and even its own use as a die is only imagined.[GE] Saalburg archaeologist Rüdiger Schwarz says any theory about their cultural meaning is purely speculative and can be neither proved nor disproved.[MF]

The Krefeld grave

A dodecahedron found in 1939 at Krefeld, Germany, lay in the 4th-century grave of a wealthy woman with the remains of a bone staff. An essay from the Tongeren museum suggests it may have topped the staff like a sceptre head, “probably ascribed with magical powers”.[MF]

FAQ

Were Roman dodecahedra used for fortune-telling?

Possibly. Many scholars and curators favour a ritual or divination use, but there is no direct proof.

Why is there no written record?

One suggestion is that divination was later banned under Christianity, so it was not written about.

Sources

  1. [LS] T. Metcalfe, “Mysterious 12-sided Roman object found in Belgium may have been used for magical rituals,” Live Science, 26 Jan 2023
  2. [W] Wikipedia, “Roman dodecahedron” (accessed Oct 2026)
  3. [GE] République et canton de Genève, “Objets archéologiques – Episode #1: Le dodécaèdre de Saint-Pierre”, 2021 (French)
  4. [GC] Grand Curtius, Liège, “Dodecahedron” (collection page)
  5. [MF] T. Metcalfe, “The Mysterious Bronze Objects That Have Baffled Archaeologists for Centuries”, Mental Floss, 6 Aug 2018

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