Everyone can guess another persons mood by the look on their face, but mood rings are believed to show what they are actually feeling. Mood rings have been around since 1975. Creators Joshua Reynolds and Maris Ambats created the stone ring to allow people to see what they are feeling inside. Each color represents a different mood: violet means happy or romantic, blue is calm, green is neutral, yellow is nervous or enthusiastic, and brown is nervous.
As a kid I always thought the mood ring could actually tell my mood, until I noticed the colors sometimes didn’t match up with it. The pebble in the ring is filled with thermo chronic liquid crystals. As a person’s mood changes, the temperatures of our bodies do also. The crystals in the ring absorb energy based on our temperature, which causes the ring the change in color. At a persons standard body temperature the ring is either blue or green. When a person is really stressed or thrilled blood flow moves to their organs rather than around the body, which makes our fingers cooler. The cool temperature of our fingers causes the ring to turn yellow. If a person is in the freezing cold the ring can even turn black.
Overall, the color of the stone in the ring is based of your body temperature. The colder you are the colder the ring is, while the warmer you are the warmer the ring is. Another surprising fact is that mood rings are affected more by your surrounding temperature than the actual temperature of oneself.
Mood rings definitely do not show the actual mood of a person, despite which most of us thought as a child but they are still very popular. They are most popular with elementary school kids, but definitely not a reliable source of ones mood.