Scagliolas are decorations that look like marble, made from colored plaster or clay.
Scagliolas are often used to make things look more beautiful or expensive.
Examples:
The table is made of scagliolas, but it is not real marble.
The scagliolas on the wall make the room look fancy.
She likes to use scagliolas to decorate her house.
The scagliolas fooled everyone into thinking it was real marble.
The whole building is covered in scagliolas, but it's not real stone.
He made the scagliolas himself and they look very real.