Silver is much less common above ground than gold.
Silver has traded far below its historical average relative to gold for over 50 years.
The futures market for silver dwarfs the physical market by a factor of more than 500 and adversely affects economic price discovery.
Silver demand is set to surge going forward and the world's mines already cannot produce enough silver to meet demand.
Silver will likely outperform gold going forward and this will reduce the price ratio between the two metals.