You can use any thing. At long you do it right.
Pyramids were used as tombs for the pharaohs and they were thought of as the gods' staircase to the heavens.
limestone
they were used with chisels to make stones in the qurry
It was used to make the pyramids in some parts of the Nile.
limestone and granite were the main materials used to build pyramids. Some of the later pyramids were made from mud brick with a casing of limestone.
The workers used sandstone to make the pyramids
bricks
across the nile
across the nile river
limestone and granite
The Ancient Egyptians constructed pyramids as tombs for their pharaohs (kings).
The main material was limestone.