The completed fireplace brickwork

I just realized that I haven't posted any photos of how the brick part of the fireplace turned out.  It's all finished now. 
 

 Next, they'll attach the terra cotta flue in the foreground of the first two photos and the metal pipe above that.  When we get the finish work stage of the construction, they'll apply the mantel to the face of the brick and board and plaster the top and sides of the firebox.  I'm thinking maybe marble for the finish, though the brickwork is so nice it seems a shame to cover it up.  Any recommendations?