Perhaps some of the jewels we are familiar with, like her tiara, diamond and pearl necklace, pearl choker and moonstone (?) necklace and earrings are actually set with stones inherited from Queen Alexandra and Queen Maud?
She also has a pair of earrings with drop pearls and diamond chandelier earrings that I don’t think has been identified.
I also wonder what happened to the group of “ancient Scandinavian ornaments in gold” given to Alexandra for her wedding by Landgraf Wilhelm of Hesse and the inhabitants of Laaland and Falster (mentioned in “Tiaras, a history of splendor”). Given her love for her own gold tiara, I’m sure queen Sonja would have taken some of those out for a spin if they were in the Norwegian vault 😊.