There was no "speculation", I merely asked a question.
Maybe I should have worded it differently.
Can anyone think of any other pearls that QE might have felt were significant enough to wear for her coronation - perhaps a gift from her husband or Queen Mary?
It may even be more likely that instead of Queen Mary, a gift may have come from George V.
I have pictures of QE wearing longer pearls of this nature but I have not noted any details. I will see if I can find any information.