This is a necklace crafted in the style of Sansa Stark’s from the Game of Thrones.
Sansa wears this necklace in several of the episodes. Sansa wears dragonflies (dress and ring as well) as a symbol of her belief in true love.
She knew all of the chivalrous tales and one must have been her favorite….. the tale of the Prince of Dragonflies.
There is a song about Prince Duncan Targaryen who falls in love with a girl, Jenny of Oldstones.
She is a common girl, who wears flowers in her hair, and he loves her so much, he gives up his throne in order to marry her.
He being a Targaryen, gave up his right to be the Dragon King and becomes the Prince of Dragonflies instead.