Admittedly, hippy-dippy crystal lore, espoused by tye-dye clad gurus makes me cringe. But all the crystal energy healing mumbo-jumbo misses the point.... Crystals don't need to be mythologised to be magical. Through the varied, inexplicable dynamics of the universe, far beyond man's sphere of influence, erupted something of clarity and order. That's mind blowing enough.
Crystals are a natural manifestation of near-perfect geometry. A prism is created when the molecular structure of a liquid solidifies into ordered patterns that repeat in three spatial dimensions, under a precise balance of heat, pressure, and elemental chemistry. (You can still see the red Arkansas dirt on these little glimpses of essential truth.)
When formed under imperfect conditions, (i.e. changing conditions) the most interesting variations occur in the rock's shape, and color. It's the same with us, with all life... there is an underlying order, a repetition, but conditions rarely stay consistent long enough for something "perfect" to form. Luckily it's the variations, the constant adaption to change, which gives people and crystals unique character.
As the analogy stands... I would still rather be a clear, luminous, yet slightly quirky crystal, than a dull jumbled hunk of rock. We need some consistency if we expect to be clear, but accept what evolves in the changing conditions of the moment, it makes us who we are.