Your guess that Princess Christina probably already sold her lot (or swapped it for more artworks as she is a collectioner of art) is a good one.
Here the Princess at April 29th 2013 wearing the Laurel Leaf Diadem, diamond buttons as earstuds, a double strand of pearls with a diamond pendant probably with a grey pearl as centre stone, so to see three diamond bracelets and a diamond ring.
Princess Irene wore the antique pearl diadem with matching diamond-and-pearl earhangers, a diamond rivière and kept it simple for the rest.
Princess Margriet wore the Pearl Buttons Diadem, diamond-and-pearl earrings, an antique necklace of old natural pearls and a bracelet with multiple pearl strands.