If a marble floor has been recrystallized will it be more difficult to hone?

It could be more difficult depending on how much the floor has been recrystallized. You might find that the floor will need to be ground with a sixty grit diamond to properly remove all the recrystallized layer. If you must hone the floor to remove the recrystallized layer first test in a small area. Heavily recrystallized marble can sometimes be softened which can make resurfacing very difficult if not impossible.

TIP If you come across a soft marble that is experiencing powdering it may be possible to consolidate the floor with a chemical called a consolidant. Check with several of the chemical companies in the resource directory for further information.