Our Mood Rings are a fun and unique accessory that will add color to any outfit. Made with high-quality materials, these rings change color based on your body temperature and mood. However, we must note that some customers have reported that prolonged wear can cause the ring to turn the finger green. While we suggest you avoid purchasing, the option is available for those who still want to try it out. Add some whimsy to your jewelry collection with our Mood Rings. - This is the case for all mood rings and not just ours!