Source : Webster's Revised Unabridged Dictionary (1913)

Stateliness \State"li*ness\, n.
   The quality or state of being stately.

         For stateliness and majesty, what is comparable to a
         horse?                                   --Dr. H. More.

Source : WordNet®

stateliness
     n 1: a elaborate manner of doing something; "she served coffee
          with great stateliness"
     2: impressiveness in scale or proportion [syn: {majesty}, {loftiness}]