When the price of gold fluctuates, you have to be careful inferring meaning - is it the value of gold fluctuating, or the value of the currency fluctuating?
No, it's a very easy question to answer. How many cups of coffee would a gram of gold buy me?
Yesterday morning, the London gold fix was 803.117 GBP/oz; if i took my gram of gold to my local baristas and traded it, i would get 6.59 flat whites. Yesterday morning, the gold fix was at 798.532 GBP/oz; my gram would have got me 6.55 flat whites.
Whereas if i'd gone in this morning with 4.30 GBP in ready money, i would have got 1.00 flat whites. And if i'd gone in yesterday with 4.30 GBP, i would have got 1.00 flat whites.
You can do this analysis against benchmarks other than flat whites: cappucinos, espressos, and even things that aren't coffee. You will always find that the buying power of a unit of currency remains constant from day to day, while the buying power of a unit of gold does not. It's gold that fluctuates.
It's not an easy question to answer.