Different rocks are used for different jobs. We use rocks to build roads, walls, houses and to make other things.

Diamond is very hard. It is used in jewellery and also in cutting machines.

Quartz rocks are found all over the Earth. Clocks and radios use quartz.

Granite is very strong. It is often used in buildings.

Slate is hard and smooth. It is used for floor and roof tiles.

Marble is a hard, strong and smooth rock. It is used in many types of decoration and building.