Pietra dura
Pietra dura is a really fancy way of making pictures or designs out of colorful stones.
First, people find pretty pieces of stone like marble, jasper, or onyx.
Then, they use special tools to cut the stones into tiny pieces that fit together like puzzle pieces.
They arrange the pieces carefully to make a picture, like a flower or a bird or anything else they want.
The stones are glued together to make sure they don't fall apart.
Sometimes, they add metal or other materials to make the design even prettier.
People have been making pietra dura for hundreds of years, and it's still popular today as a really special kind of art.
First, people find pretty pieces of stone like marble, jasper, or onyx.
Then, they use special tools to cut the stones into tiny pieces that fit together like puzzle pieces.
They arrange the pieces carefully to make a picture, like a flower or a bird or anything else they want.
The stones are glued together to make sure they don't fall apart.
Sometimes, they add metal or other materials to make the design even prettier.
People have been making pietra dura for hundreds of years, and it's still popular today as a really special kind of art.