Mac’s Stone is a unique brownish nude colour that’s hard to track down, but recently I discovered some near enough dupes. They’re of course not 100% as they have different tones & textures, but I’d say they’re pretty darn close!
Firstly, Rimmel Exaggerate lip liner in Cappuccino is almost identical. It’s pretty much the same, it’s also matte which is fab.
The second one I found was NYX Cappuccino lip liner, this is darker and a slightly different tone but it’s a good dupe!
Plus for 2/3 pounds for a lip liner, each of these are fantastic and pigmented.