Are XAU crosses harder to trade than XAUUSD?

Generally yes. Spreads are wider, liquidity is thinner and two macro drivers are involved instead of one.

Why did XAUEUR fall while XAUUSD rose?

Because the euro strengthened against the dollar by more than gold gained, so the cross lost ground in euro terms.

Which XAU cross is most liquid?

XAUEUR typically, followed by XAUGBP, though it remains materially thinner than XAUUSD at every broker.

Can I hedge XAUUSD with an XAU cross?

Not effectively. The positions are highly correlated, so combining them usually concentrates gold exposure rather than reducing it.

WHAT ARE THE XAU CROSSES?

XAU crosses are gold pairs quoted against a currency other than the US dollar, principally XAUEUR, XAUGBP, XAUAUD and XAUJPY. Holding one is holding two positions at once: long gold and short the quote currency, which is why a cross can decline while dollar gold rallies if that currency strengthens faster than the metal.

The crosses typically carry wider spreads and thinner liquidity than XAUUSD because they are derived from two markets rather than quoted directly, and each adds a distinct macro exposure such as ECB policy for XAUEUR or yen carry dynamics for XAUJPY. They can isolate a gold-specific thesis from the dollar variable, but trading a cross alongside XAUUSD concentrates gold exposure rather than diversifying it.