That looks like a marble or a travertine. Marble is a great material for bathrooms. There's no reason to find an alternative when it's going in the bathroom, but if you must you could look at quartzite. It's a natural, quarried stone that is harder than granite, but tends to look like marble.

Thank you for inquiring about our project. Every project we design is custom for our client, so although we cannot provide you with the exact details, we would love the opportunity to work with you, should you be looking to engage an architecture/planning/interiors firm. Please feel free to contact us at info@cunniffe.com. Thank you again!

Im trying to find the wall light sconces. Do you have information on them?