Some interesting pieces of information from titans of the industry (James Turk of Goldmoney.com, Eric Sprott (billionaire) and founder of Sprott Asset Management, et al):
The historical price ratio between silver and gold for hundreds of years has been about 16:1. This is so because this is roughly the ratio of silver to gold present on planet earth.
At this moment, silver and gold is trading at roughly 50:1, so silver is tremendously undervalued. To add to this anomaly, silver is immensely more valuable as an industrial metal than is gold (silver is used in computers, cell phones, solar panels, etc.). So technically, silver should be trading at ratios even lower than 16:1.
James Turk, Eric Sprott and many other very brilliant people assert that the central banks of the world have been manipulating the gold and silver market for years-trying to keep their value low relative to their respective currencies. And because silver is a relatively small market, they (the central bankers) are trying to keep the price of silver depressed as to indirectly keep the price of gold down. But in doing this, the central banks (and their affiliates, ie. Wall Street banks) are hemorrhaging massive amounts of money on their shorts. Eric Sprott et. al. assert that this artificial manipulation of the gold/silver markets cannot be sustained because it's getting way to expensive and they (the central banks) will eventually throw in the towel. And when this happens, both gold and silver will soar and the historical price ratio of silver to gold @ 16:1 will return. In today's dollars, that would make silver worth $107 per ounce.