This is the combo I'm enjoying at the moment.
I started with one coat of 600 Deliciously Dark by Rimmel.
Honestly, one coat is enough.
It's a very dark burgundy/black.
And then I topped it up with only one coat of this goooorggeeeoussss glitter nail polish by Next.
This is honestly the best gold/silver glitter nail polish I've ever owned.
It's super extra fine glitter that shines in a mixture of gold and silver tones.
It's so finely milled that when you put it on you don't get ANY bumps on your nails and if you touch it you cannot tell there is glitter.