Philosophical Dictionary, by Voltaire

Talisman, an Arabian word, signifies properly “consecration.” The same thing as “telesma,” or “philactery,” a preservative charm, figure, or character; a superstition which has prevailed at all times and among all people. It is usually a sort of medal, cast and stamped under the ascendency of certain constellations. The famous talisman of Catherine de Medici still exists.