This ended up with Princess Ragnhild, Mrs. Lorentzen. The Princess could be seen wearing it to the State Banquet for the President of Portugal in 1980 for instance.
(https://regalevents913271078.wordpress.com/blog-2/norway/olav-v/1980-portuguese-state-visit-to-norway/)
According to my notes the last time it was seen publicly in Norway was at the banquet hosted at the Royal Palace in connection with the 80th birthday celebration for the King and Queen in 2017. Then it was seen worn by Princess Ragnhild's eldest daughter Ingeborg.

Previous Message
Hi, do we know what became of this interesting sunburst brooch? And was it a wedding gift? I know the bow brooch was a wedding gift.