Thank you, VF, for the pictures of these rarely seen jewels.
Not sure that the red stones in the first picture (with the "Star Trek" tiara) are rubies.
The ruby earrings worn on the second picture (State banquet in Beijing) are lovely. I wish they could be seen again!
I think that the sapphire (or blue tanzanite?)earrings worn on the third picture (concert in Rio de Janeiro) were worn by Princess Märtha-Louise at Princess Madeleine of Sweden's wedding in 2013. The pendant is different, though: