This has been a most enlightening series of posts. I have seen many pieces that I did not know the SRF had. Imagine if they had not sold the Emeralds and or lost pieces out of the main branch. Bravo again and thanks.
1°A Bulgari necklace with pink tourmaline, aquamarine, peridot and citrine
upload image
2° Maybe an other Bulgari set :
3° An indian set of jewels :
4° A coral set also worn by the Queen Letizia
5° A three strand pearl necklace :
hostings pic
6°Her mother's ruby pendant :
7° An emerald and diamond brooch :
8° An amethyst ? and diamond brooch :
twitter png
Franck
Saudi gifts, worn for the Kings visit to Spain in 2001. Carved emeralds and tuti frutti gems brooches and bracelet set.(worn once)
upload pictures
huge sapphire earrings (worn also during a saudi visit).
During a visit to Thailand the queen wore also a huge set of sapphire bracelet and ring.
A ruby set gift from Saudi royals (she wore it only for a saudi visit)
Franck

Previous Message
Great find Franck!!! It does cover many of the pieces in her collection.
Here I will add some more:
Multicolour pearl necklace:
Queen Sofia is often seen for both daytime and evening events in this multicolour 3 strand necklace with matching earrings.
Sometimes only one or two strands are worn:
It turns out that this is one short and one long necklace hence enabling HM to wear it in many differing combinations.