We use the daily marked prices from this site for Bitcoin (seems to cover a range of exchanges accurately and allows a decent daily average reading)
We use the close for the gold ETF (GLD) to follow the price of gold bullion (it’s a very accurate proxy for ratio purposes and it’s easy).
This is the resulting chart:
As of yesterday, the ratio has moved up to 5.43X, that’s up from the low of 3.18X two months ago. That’s a pretty decent move.