All honey will crystallise in time.
Interestingly, raw fermented honey is less prone to crystallization than the unfermented form of the same honey, though it does eventually crystallize after being exposed to air and when most of the jar has been eaten and the thickest, bottom part is exposed. Despite being less crystallization-prone, I find the fermented form to be far superior to the unfermented form.
It is assumed that you're average customer will be put off by the appearance and consistency of honey that starts to go kind of gooey and odd when its half way between being liquid and going more solid, and heating it makes the process take much longer, so it looks nice and clear and runny in the jars on the shelf.
I wonder if it's also because more liquidy honey pours/drizzles easier, as people nowadays tend to think of honey as something to drizzle into tea or onto toast. When I give thicker honeys to people who are trying to eat semi-Paleo or gluten-free, some ask how they can eat honey if they can't put it on toast. Quite a shame.
In my experience good quality runny honey quickly starts to crystallise and set, i.e. couple of weeks there will be at least some evidence of the process occurring if not a major change in consistency.
That's not my experience with these excellent runny honeys:
Puremiel Organic Wild Forest Honeyhttp://www.amazon.com/Puremiel-Organic-Wild-Forest-Honey/dp/B0040HSA6A"Wild forest honey is an exclusive honey harvested from one of the most treasured parts of Spain - the Sierra de Grazalema Natural Forest. This lush park in Andalucia has the highest levels of rainfall in all of Spain. Dark colored and rich in minerals with a slightly earthy flavor, wild forest honey is delicious spread on your favorite bread or as a sweetener for a mug of hot herbal tea. Certified organic by the USDA, Puremiel wild forest honey is collected by beekeepers with five generations of experience. This unique raw honey is free of preservatives and artificial flavors."
Heavenly Organics™ Rare Wild Forest (Neem) HoneyWild Beehives in Virgin Forests
http://www.heavenlyorganics.com/productsho/honey_forest.aspx"Our rare, organic, unheated, Wild Forest Honey is collected from wild beehives by traditional groups of tribal honey foragers living in the virgin forestlands of central India. These experts travel deep within the forests to gather the wild honey, well beyond the reach of automobiles and other pollutants. ....
Sustainable, Eco-Friendly Honey Harvesting Methods
Traditional bee keepers hand-harvest this extremely rare, multi-floral honey. They are careful to use eco-friendly, natural methods that protect the bees and preserve all the natural pollen, vitamins, minerals, and enzymes of the honey."
"'Wild Forest' Neem Honey
Organic, Raw, Sustainable, Wild-Collected, Health-Promoting, Fairly-Traded (12oz. jars)
Heavenly Organics "Neem Wild Forest Honey" is collected from wild bee hives by indigenous tribes in the dense forests of Central India. This area is famous in South Asia for the collection of wild-crafted herbs used in the preparations of medicines according to the ancient Science of Life, Ayurveda. Chief among these is Neem, known in India as "the village pharmacy" and prized throughout the world for its wide-ranging health benefits. And it is excellent drizzled on apples, pears and strawberries or, as many of its fans advise, "It is great all by itself." Please view the fascinating 5 minute video on our home page to see the sustainable, cruelty-free, fair-trade, wild collection practices used in gathering our "Chambal" Wild Forest Neem Honey."
Whereas this honey by the same honeymaker, Wild Organics, is already very crystallized when first purchased, and I find the more liquidy Wild Forest honey to be superior in both taste and health effects:
Both the liquidy honeys are tree honeys, so I wonder if there's something in tree sap or tree bud nectar that makes the honey less prone to crystallization?