Answer:

SANDSTONE

Answer	Crossword Clue
SANDSTONE	Common sedimentary rock
SANDSTONE	Certain sedimentary rock
SANDSTONE	Outdoor amphitheater

SANDSTONE	Rainbow Bridge National Monument, essentially
SANDSTONE	Rock.
SANDSTONE	Construction material
SANDSTONE	Sedimentary rock
SANDSTONE	Sound quality for George?
SANDSTONE	Grand Canyon material
SANDSTONE	Zion National Park material
SANDSTONE	Building material

SANDSTONE	Construction rock