Durosian marble

"Yes, it IS a holding center! Look, just because it has Durosian marble columns out front and an indoor Toorgash range with real grass and live Toorgas doesn't make it any less a jail."

- Warlan Presvere Tosk

Durosian marble was a type of material. A Coruscant holding facility that was used by the Galactic Republic during the time of the Clone Wars had Durosian marble columns located at the front of it.