Admittedly he had not, as he had with Sirius, looked desperately for some kind of loophole, some way that Dumbledore would come back … he felt in his pocket for the cold chain of the fake Horcrux, which he now carried with him everywhere, not as a talisman, but as a reminder of what it had cost and what remained still to do.
There are no more uses of "talisman" in the book.
Show samples from other sources
When she saw me, she shot over in her tight quick steps, holding the BlackBerry in front of her like a talisman.
Gillian Flynn -- Gone Girl
When doubt and shame or worse crept in, the letters and books and visits from my friends and lover and family were powerful proof that I was okay, more effective than charms or talismans or pills to fight those terrible feelings.