it is interesting how versatile this set is...you can remove the diamonds in between sapphires, which Queen Margrethe has been doing quite often...you can re-arrange the sapphires...for instance, the central element is larger in one picture than the other (see below pictures).
there were also 2 sapphires converted into hair pins...I just don't know if that was a permanent change, which we saw ( Marianne if you can kindly repost the picture from Princess Nathali'e wedding) at the Berleburg wedding.
The necklace has been shortened and in my opinion it looks much better as Queen Margrethe wore it when she was younger...lower and more grand looking.