It's possible. But unlikely.
Macron will pick up all the left wing voters getting him to 50%
Le Pen, even with all Fillon voters moving to her (not guaranteed) would have a tick over 40%
Gold more likely to be driven up by Nth Korean standoff IMO. Chubby fooker won't back down from his nuke programme for total loss of face, and the US will absolutely not allow NK to get ICBM nukes. Collision coming unless China takes drastic action... something will be done.