These unusual earrings have been printed on a 3d printer using a plant based polymer called PLA. This particular polymer has wood fibres in it so the printed piece looks and feels like wood.
 
The shape is that of the DMT molecule. DMT is a naturally occuring substance found in plants and animals. It is used as a recreational drug for its psycadellic effects. It is often used during rituals and ceremonies as it can cause mystical experiences, hallucinations and euphoria in humans. 
 
The earrings come on silver plated ear hooks.