I believe it will happen demonstrably as the metals exchanges and the bankers who practice fractional reserve gold selling get called upon to make physical delivery and are unable to do so.
Virtually overnight, all reasonably large amounts of gold for sale will disappear. With no gold being available to protect wealth and most classes of paper investments being suspect people will quite literally flood into the gold share market as their last possible chance at exposure to the real thing. I doubt if the gold share market has seen five percent of the money that is about to flood into it.
P.