I donít recognise the choker in the first photo, but it is from a State visit by King Juan Carlos and Queen Sofia of Spain in March 1984.
The brooch looks like her husbandís badge (Spanish?), only hidden by part of her sleeve.
I have never seen the second photo before, but I wonder if Princess Astrid wore Queen Maud's diamond and turquoise choker?
Maud's choker in Gertrude Massey's miniature from 1906 is too generic, but it indicates diamonds and turquoise - like the choker Maud wore in a photo series by Karl Anderson in 1909:
Calle Fernerís wife wore a seven-strand diamond choker in May 2017.
ďDefinitely antique diamondsĒ by a source I have who attended the dinner, but I donít think it is the same choker Astrid wore.
I came across a couple of interesting photos of Princess Astrid, Mrs. Ferner (of Norway) a while ago. I have never noticed that she has used chokers. But found some old pictures where it is clear that she has. The first picture shows her with a velvet choker and a large diamond brooch attached to it. Very interesting. I have not seen this piece of jewelry before. And can not identify the "brooch". The second one is very interesting too. That is Princess Astrid with a choker. It does not look like seed pearls, but of course, the quality of the photo is very bad, but it looks more "blingy" to me. Could it be one of the many diamond chokers of Queen Maud? A source told me that the chokers still exists, but due to fragileness and difficulty to wear them, they never do. In 2017, however, one of the Princess' daughter in laws (wife of Calle Ferner) wore a choker for the joint 80th celebrations of King Harald and Queen Sonja, it could also be an opportunity.