Thank you for posting such beautiful photos, Maud!
I would say Ingrid, in the photo you posted, wears the same bracelet as Mary wore at the state visit from Luxembourg shortly after her engament. I also found this photo which confirms what we can see in the photo posted by Nellie:
Do we assume the bracelet was an engagement gift from the Queen, as Mary wore it the first time so shortly after the engagement? Or is it confirmed?
She clearly didn't wear the bracelet on her engagement night - but then the gold wouldn't match her other attire.
Ingrid also wears the special kind of bracelet now worn by all of her female descendants.
This photo is Princess Isabella wearing the same kind of bracelet at the christening of Princess Athena: