All of the pictures are different configurations of the same necklace.
You'll want to wear this piece everyday. It works with any outfit day or night and can be worn front or back. Adjustable and transformable you can also layer this piece with any of your other favorite necklaces. To adjust you can simply pull on either chain very gently to adjust the lengths and you can also move the sliding beads around to transform the shape of the necklace. Each chain is marked at the ends so you can differentiate the two.