The necklace I recieved I don't believe this I real amber. The beads feel like plastic, just an amber color. I have no way to test them, just disappointed with the necklace / bracelet combo I recieved.Edit- I did alot more research into amber and I am wrong. These beads are not plastic and come with authenticity, however they are not adjustable. We started teething at 3 months and this necklace and bracelet combo is too big