I don't know anything about Queen Alexandra's diamond necklace, but the number of necklaces not worn by members of the NRF in public are many. Some examples:
The diamond and ruby necklace, a wedding gift from Queen Victoria.
The Royal Warrant Holders' diamond and pearl wedding gift tiara/necklace.
The diamond and turquoise necklace, a wedding gift from QV's Household.
The gold and opal necklace, a wedding gift from Lady Wantage, Harriet Loyd-Lindsay.
The aquamarine necklace, a Coronation gift from Scotland in 1906 (the British press also mentioned it had a pendant).
The diamond, pearl, and ruby choker on a gold frame.
The diamond and pearl "Coronation" choker (also worn years prior to the Coronation in 1906).
The pearl seed choker with pearl tassel.
An unknown turquoise choker, worn in 1906.
An antique turquoise necklace, a 60th birthday gift from King George V to Queen Maud in 1929 (according to Evening Star, 8 December 1929).
Intersting. But one wonder's why the don't change the Jewels or break them uop to crerate new Jewelsinstead f buying new peices like Pricness Märthta Lozuise's 18th birthday gift tiara or the daiys tiara for the Crown Princess.
Thank You Franck!
Since this article has been published, I've received a message from someone with a source in the Royal Palace in Oslo, who have told me that there are a lot of 'big' jewels from Queen Alexandra that lie unworn in the vault, because they are too old, outdated, and possibly fragile.
We know the Diamond Chandelier Pendants/Earrings from the necklace are now worn by Queen Sonja, so it is quite possible that the other elements of the necklace are with the Norwegian Royals too, though I doubt it exists in its original worm.
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