Sa Cruxi ‘e Marmuri or Marble Cross represents one of the most important monuments of the historical-cultural heritage of Selargius, for this reason, in 1989, it was included in the coat of arms of the Gonfalone.
In the past it was located between Bia Beccia and Bi e’ Paoli, currently it is situated between Via Istria and Via Trieste in front of the Town Hall Square.
It was erected in 1425 (period of Catalan-Aragonese domination) by Jeronimo Barder, commissioned by Simone Castay and Antonio Majia.
The sculpture originally rested on a stone base replaced in the 1960s by a concrete base. The column has a Gothic capital; the sides of the cross are carved: one side depicts Christ Crucified and the other a saint with a child in his arms.
On one side of the crucifix are inscriptions (the name of the sculptor and the names of those who commissioned).
The sculpture was considered both a destination for preaching and a place for executions.