This is Orchid Island Couture and Colorstay Amethyst:
made their way online (not, however, including this one). It might be easier, if you don't live in Texas where Orchid is sold, to find the old (not the current) Revlon Colorstay polishes - they're discontinued but more likely to be findable. These are both slightly shimmery purples, a little to the red-violet side but not too much. Almost - but not quite - boring. Both of these are actually very pretty. And I am definitely going to try to get better pictures of this wheel later on, but for now this will have to do.