We do know that Queen Elizabeth II was given aquamarine clip brooches by her parents in 1944.
Please find below a link from the Queen jewels vault :
I know do think that is part of a set of jewels composed of earrings, 2 brooches (the set) and a bracelet.
Please find below photos of the set (from Beth and the Queen jewels vault) :
(Bracelet + earrings)
(Earrings, clips + bracelet)
(Earrings + bracelet - photos from Beth)
(Earrings + clips - Photo from Beth)
(Photo from the Queen Jewels vault)