Serotonin is the neurotransmitter of happiness. Serotonin is responsible for feelings of happiness, satisfaction, joy, relaxation and well-being. Serotonin also has an elegant shape. Our totally new Serotonin Necklace, it is an attention-grabber, with cubic zirconia and your choice of three different materials.Perfect for the chemistry or biology lover in your family! MORE CHOICES:You can find this Serotonin Necklace also in: Holiday Must Haves and Cubic Zirconia Jewellery categories.