A simple necklace, crocheting continuously: along the line of the necklace you crochet several 5 petaled flowers and you add the two ends of the thread crocheting a final flower again.
So the closure is hidden behind the last flower.

I myself made the necklace long enough to wrap it two times around my neck.

See the free download Pdf for the complete pattern.

Extra NOTE: to give a better shape to your necklace (and also for washing it afterwards) wet it and wring it.
Then spread it on a clean surface somewhere in your house, give each flower the good form and cover it with a piece of cotton, so the necklace can dry up and take its form. This note is valid for all my flowered necklaces.