MAC Nymphette is nice, but I don't know if that is the kind of "sparkles" you're looking for. If not, you could check out the lustreglasses, ones like Love Nectar, Spring Bean and Instant Gold are nice.
I agree with the pigment, but try your favorite lipgloss with reflects gold glitter pigment, my absolute favorite is prr lipgloss and i dab on some reflects gold glitter on my lips
Not MAC, but Yves Saint Laurent has the whole line of glosses called "golden gloss", every color there has a lot of golden sparkles! Its a vey nice one, i totally love it!
I also really rate the YSL Golden Glosses - there's whole bunch of nude ones with gold sparkles in them and also a clear one. They're super-sparkly without looking tacky and the texture's nice too.
I have a couple of the YSL ones and they are really nice, not too sticky, and have a good scent. The clear one could go over anything and give you that gold subtle sheen..