This is a thread about what the effects of element destabilization are and how they effect a synthesis. Please post your findings here so we can have an updated list of them.
Edited: Please read Reika's comments as they were the highly more detailed than my notes
(Thankyou Rentahamster, I forgot all about this article on the lodestone)
A. When an element of a synthesis becomes unstable, the following effects take place respectively:
Lightning: Progress greatly reduced
Wind: Durability consumption greatly increased
Fire: Quality greatly reduced
Ice: Progress reduced, chance of aetherial sparks reduced
Earth: Durability consumption increased, chance of aetherial sparks increased
Water: Quality reduced, chance of aetherial sparks increased