Does anyone have any experience with Amber necklaces? Do they work?

Myself and some friends used it when baby is teething and can see the good results. http://sg.theasianparent.com/baltic-teething-remedy-amber-teething-necklace/ There are two types of teething necklaces: Amber Teething necklace and Hazelwood Teething. The main difference between the two is the type of materials used. The one I used was Amber Teething necklace which has anti-inflammatory and therapeutic properties. If you feel uncomfortable to let baby to wear the necklace on neck (choking hazard), you can wear it on other place as long as directly on the baby's skin e.g. ankle.