I always thought there wasn't much of a difference as well.
Though I have read that amulets were more of a jewelry aspect (pentacles, rune jewelry, etc.) And that talismans were things that you make during ritual such as items made for a specific purpose (protection, luck, love, etc.) that you can carry, hang around the home, and wear. This can go along the lines of making small sachets, certain knots, beaded items, and things of the sort.