If you like the look of this rock, imagine what it could like in your house. Carve off a few chunks with your pickaxe and save up for a fetching limestone interior. The white will complement your eyes.
You might be surprised to learn that Vannaka refuses to use limestone in any capacity. Someone told him that you can contract lime's disease from it, a rash that pains the joints and nerves. "Can't be spoiling these reflexes", he'd say, swinging an axe.
Don't try to correct the man - it's not worth it.