With all these pearshaped pearls and stars in the Orange-Nassau collection, they can create similar diadems. On royaldutchjewels (now offline) it was written that there is still a similar diadem as Princess Benedikte's in the collection, originally the top half of an old diadem.
Beautiful screenshot.
--Previous Message-- : It is a screenshot from the documentary : : I can't wait for the book to be released :