I knew it! I love M pearls! Your collection is fabulous.
By the way, on the M charm, the new position of the strands is further down. The M charm on my older strands were in the "3rd pearl" position, the same as in your photos. The new position is further down and ends up more near the collarbone which I like.
How did I get it moved?
When I sent my strands in to have them cleaned and restrung, I asked Mikimoto to also place the M charm in the new position, which they did. Just a thought if you might want to do that also. It was easy.
The M charm on the bracelets remain the same, so I kept my bracelets as-is when I sent them in to get cleaned/restrung.
You know me... I love love love M pearls, more so than VCA (I know, heresy here on this VCA forum!)
I vote jumbo M Golden South Sea studs. They will look fabulous on your ears, match your necklace, and best of all, make your face glow with iridesence like the sun! Since you have YG VCA pieces, the pearls would also look great with them.