In S06E01 of the series we get to discover that
Melisandre's necklace is a great source of her powers.
Is it plausible that all Red Priests/Priestesses have a token of their own from which they can channel their powers? If so, what are the possible tokens of the other Red Priests/Priestesses that we’ve seen?
I'm fine with answers from both books and series.
This is my first question so be gentle :)