There was no conclusion. She herself wrote she wore her emeralds, but the tiara of the emerald parure does not match the tiara she wore. The central motiv of the mystery tiara is a dark stone and most likely an emerald (she is wearing emeralds in her other jewels and she described them as such in her memoires).
--Previous Message-- : Since Princess Wilhelmina is wearing a suite : of diamond-and-emerald jewelry, I wonder if : the mystery around that unknown diadem has : now been solved? : I don't remember if there was a conclusion : on this board about the diadem worn by : Princess Wilhelmina on this photo from 1958: : : : :