There ya go, Ace, why did you have to mention "high concentrations." Now you make me think. Yes high concentrations will precipitate some chemicals. Table salt is a good example, dissolve in liquid, no crystals, then evaporate the water and salt crystals spontaneously form. Yet other chemicals such as carbon are impervious to high concentrations and require extreme pressure and heat to make a diamond.
I believe most of us have seen liquid honey form in an unopened jar of honey. My thoughts are the honey was contaminated with a tiny crystal unseen to the naked eye. In contrast, I have honey, never heated, that remains in liquid state.
Now consider the honey has "high concentrations" of fructose. Yes, agreed, this might tilt the scales in favor of spontaneous crystallization of the honey without a seed. Now quit making me think so hard Mr Ace Einstein. Good day, fella.