Knowledgeable investors know that the long-term price ratio of gold versus silver (i.e. over roughly 5,000 years) has averaged approximately 15:1. This closely coincides with the ratio of the natural occurrence of these two elements in the Earth’s crust (approximately 17:1). Not only did this price ratio remain relatively constant over several millennia, but the fact that the price ratio so closely mirrors the rate of occurrence of the two metals shows that (in relative terms) our species has demonstrated a roughly equal preference for the two metals throughout recorded history.
via Gold-Silver Price Ratio Getting Silly Again – TheStreet.