Queen Beatrix of the Netherlands wears a modern necklace of mixed metals for a ceremony honoring the 100th anniversary of the Royal Dutch Mint in Utrecht, June 2011; she has worn several similar necklaces, all of which appear to be from her personal collection, in various numbers and lengths

Queen Beatrix of the Netherlands wears the family’s five-stranded pearl necklace with the pearl and diamond clasp for a visit to the Pushkin Fine Arts Museum in Moscow, June 2001; intriguingly, not much seems to be known about the provenance of this grand pearl necklace, though it’s possible that it’s an heirloom from Queen Sophie

Princess Beatrix of the Netherlands wears Queen Juliana’s Aquamarine Necklace and accompanying jewels from the married parure (and Princess Irene wears pieces from the Ruby Peacock Parure) for a theater gala, July 1959; learn more about the aquamarines here and the rubies over here!