Silvia wore the pronger for the last two years in a row - so I'm predicting sapphires this year as those two seem to be her designated "nobel" tiaras for 10+ years now
I would LOVE to see Madde in the aquamarines, I feel like that tiara was made for her. but I'm excited that she'll be there whatever she has on her head!
hoping for amethysts on Vic (purple is my favorite color, obvs

) but the baden on her is another perfect tiara-to-wearer match
Sofia has worn the amethyst tiara before correct? and one of the buttons too I think. so maybe we'll get a nice surprise from her as well
Christina I think is the only person in the SRF who can wear the buttons well thanks to her white hair, so she can keep on rocking those :]