Oh yes, certainly. Days when I need to battle the Evil Eye, I wear one (or more) of several hamsas in my collection (one of which literally snared me my husband :o} ). I do feel armored in a way by my hamsas.
I also tend to wear favored stones when I need to acknowledge sad feelings, inner struggles or gain some clarity; I love looking into moonstones, labradorite, moss agates and various types of quartz, especially amethyst. So I tend to wear those stones as rings, though sometimes as pendants.