Apricot trees are usually able to produce fruit without a pollinating partner, but the "Moongold" variety appears to be an exception to this.

Probably almost any other apricot tree, provided it is a different variety, should be able to pollinate it. The issue will mainly be bloom time. So you will want to identify whether that variety is early or late blooming for an apricot, and find another variety with a similar bloom time.

(In fact, even plum trees should theoretically be able to pollinate it, but in that case the bloom time may not match up, since apricots tend to bloom earlier)

socalnolympia since you seem to know about this topic - will Prunus mume and hardy almonds pollinate? Around here, I'm assuming they will bloom at about the same time.

The almond is 'Nikita's Pride'.