Granite: A very hard, grey, pink, or black rock, used for building.
NOUN. This granite is great for making constructions.
Limestone: A white or light grey rock that is used as building material and in the making of cement.
NOUN. This limestone is used to make cement.
Marble: A type of very hard rock that has a pattern of lines going through it, feels cold, and can be polished to belcome smooth and shiny.
NOUN. Marble is a precious stone.