In 1927, her parents, King Wilhelm III & Queen Emma, gifted an aquamarine tiara to their daughter on the occasion of her 18th birthday. It's now part of the Orange-Nassau Family Foundation together with the rest of the parure.
Queen Emma, her grandmother, gifted her an aquamarine Sautoir & Bracelet set
In 1937, for their wedding, Prince Bernhard gifted Juliana a pear-shaped aquamarine pendant.
Whereas her mother-in-lawn, Princess Armgard, gifted her 2 pairs of briolettes (faceted drops) earrings.
Later her husband added 2 brooches to the parure:
And an aquamarine ring (collage of different aquamarine rings in the Dutch collection):
Other bracelets in their collection: