Bitcoin offers superior financial utility than gold. Releasing gold from the somewhat artificial duty of store of wealth will lower the price for things done better with gold
http://geology.com/minerals/gold/uses-of-gold.shtml.
Prediction; the price of gold will mostly drop as the exchange rate of Bitcoin goes up. Times of unrest will see both gold and Bitcoin rise but as more and more people learn to trust Bitcoin they will flock to it instead of the relatively inconvenient gold.
We are fast approaching the $US/BTC exchange rate of $1,000/BTC where the switch to mBTC (or whatever we end up using) will sweep through and reset attitudes. $1/mBTC will look very inviting and surges to new highs will follow.
I've been giving gifts of Bitcoin. Not long ago I was giving 200mBTC (at the time worth about $25 US). Now I'm giving what I call Bitcoin pennies 0.01BTC (worth about $8 US); A) I'm giving to more people and B) I expect they will be worth plenty enough soon to spark interest.