Pretty straightforward suggestion, add a toggle-able confirmation prompt to the forge. Whenever you try to forge something, a pop-up box will ask you, "Are you sure you would like to forge [insert item name]?"
As with most pop-up boxes, there will be a spot to check "Don't ask again," so we are not prompted whether we want to forge or not.
This could prevent mis-clicks, because while uncommon, they do happen, and they usually waste a lot of crystals for no reason.
It sounds unnecessary to add this, because you could just go to the clockworks and grind for fire crystals. But it sounds convenient at the same time because of the radiant fire crystals drop rate. :P
+1