Two correlations seem no longer to apply; usually oil and gold follwed each other and usually gold and US$ went in opposite directions.
These days the opposite, gold has strengthen significantly relative to oil and both $ and gold have gone up in value.
This means that in terms of euro, swiss francs etc, gold has gone up even more, so basically in all currencies gold has been the strongest performer.
What causes this and is it sustainable? I don't know but clearly something has changed. I'll stick to my gold investments for sure, at least until I see anything else!