Beautiful and complex, the Neuron could be called the foundation of all human thought and action. You possess from 86 billion to 100 billion of them (depending who you ask). Now you can have one more. This pendant displays a pyramidal neuron (photo by MethoxyRoxy, design CC 2.5 licensed) behind a 1" glass pendant. The image is printed on a translucent medium in order to give the pendant a slightly luminescent look. The back is sealed with a jewelry-grade resin and is water resistant (although you should still not wear it swimming or in the shower). The bail is silver-plated and the pendant is hung on your choice of an 18" black cord, silver twist chain, or silver link chain.