The one design that bridges the gulf between Arabs and Jews, also known as the Hamsa, symbol of the healing power of the Goddess reaching out to heal and comfort.
I'm being nostalgic, Facebook just tossed up this memory of an evening I spent with my old pal Lyle Tuttle, when I even got a photo of the little Borromean triangles / Valknut I once put on his forearm. I miss him.
An ancient Moorish symbol supposed to bring good luck and ward off the evil eye. Used in the TV show M*A*S*H* on the "swamp" door, (the surgeons' quarters), and on the book covers of the works of William Summerset Maugham.