Stones

I was standing this afternoon with one of our flat capped church members admiring the builders work as they laid the first bit of the town square.
"Lovely isn't it?"
"It's concrete vicar..."
"Not it's not it's stone..."
"concrete."
"It says "stone" on the packet over there..."
Long pause...
"You can tell by the variation in the colour."
Long pause.
"Cheap rubbish then is it vicar?!"

Oh well never mind.