After reading through a bunch of reviews, I was expecting an extremely lightweight flimsy necklace but they are really nice, a good weight, doesn't feel any more breakable than most of my jewelry from around the same price point. They're really pretty and the glow in the dark lasts a long time, I wake up in the morning and it's still glowing 8 hours later! And the dark rainbow reminds me of the prism in old projector cubes! I've been wearing them daily, I loved them enough to buy the other two I was eyeing. Thanks!