GOLD - SILVER correlation

HI!

Has anyone investigated the correlation between GOLD and SILVER and how it could be exploited?

I'd like to start a discussion here?

The chart is self-explanatory. The indicator down is just the price of gold and silver adjusted to be in the same scale. It follows the %change from the very first point(candle) available on the chart. Yellow line = GOLD, grey line = SILVER.

Suggestions!
Questions?
(I have a trading ideas, but deep analysis is needed)