I just looked up Queen Ena of Spain's tiaras and found quite a few that I haven't seen before. So the story about her leaving most of her jewelries to her daughters rather than her son ("Jewels to Pass") has some truth to it.
Aquamarines tiara and the entire set of aquamarines:
The aquamarines tiara was re-worked after it's passed onto her daughter, who married an aristocrat:
Cartier diamond tiara with emeralds rather than pearls and the entire set of emeralds:
Diamond Garland tiara:
Diamond spike tiara (reportedly sold during exile):
So she left only one tiara, Fleur de Lys, to the main line along with diamonds and pearls. All the color gems were left to daughters (or sold off?). I like the aquamarines and the emeralds set but I don't like the settings. All of them can use a makeover. I wonder whether there's a chance Felipe can buy these two sets back. Aquamarine matches Leonor's eye color and will look great on her. Same for the emeralds on Letizia.