I keep a soldering pencil around for just such jobs. As I also
use it for lead soldering, so first I’ll file away any lead
solder off the tip to do a nice clean job.
Place the heated tip against the inside of the shank just under
the pearl seat for a few seconds. That’s usually enough to
soften the epoxy glue to let the pearl slide or twist off. My
first few times I think I really put more heat than necessary,
it’s surprising how little it takes. Sometimes it takes two or
three attempts to fully remove the pearl but I’d rather do that
to keep the heat on the pearl to a minimum.
For grabbing hold of the pearl, I use pearl tweezers (flat ends
with little cups) for anything around 4.5 mm or smaller. For
anything larger, my fingers work great.
Hope this helps,