Mine did the same thing. At first I just ordered a pip off of AliExpress. It sat up too high because I didn't realize only the pearl itself had fallen out. I can't seem to find just a pearl without a metal casing.
So the options I've landed on so far are ...
1) Try to pry the metal portion of the pip out of the bezel in order to replace the whole thing. I'm scared of ruining the whole bezel if I do this.
2) Try to pry just the pearl out of the replacement pip in order to be able to glue it in. It's so small to work with I'm not sure how to pull this off.
3) Place a dot of lume paint the in the concave portion of the empty pip and just roll with it. This is where I'm leaning at the moment.
