I found a YouTube movie, opening from the Riksdag in Sweden in 1960. A Swedish Noble lady wore a tiara that looked like the tiara from Norway. I Will try to make some close-ups.
--Previous Message-- : No, it is not. The Norwegian Amethyst tiara : (Parure) is from the late 20th century. It : was payed by insurance money after the pearl : tiara was stolen at the jeweler in London, : where it was sent for maintenance. :