yes redmond will work, its real Sea Salt . i have used redmond and celtic Sea Salt , and recently i got some himalayan salt. this is the order i would rank them in as far as quality, purity, taste, and mineralization goes.
i think the himilayan is more pure due to being the deposits from an ancient sea, a sea that had no people around to pollute and poison it. both celtic and redmond's are harvested from oceans that are sometimes used as the world's dumping grounds.