Creating Waves of Awareness
Mood rings can't tell your emotional state with any degree of accuracy, but the crystals were calibrated with have a pleasing blue or green color at the average person's normal resting peripheral temperature of 82°F (28°C). As peripheral body temperature increases, which it does in response to passion and happiness, the crystals twist to reflect blue. When you are excited or stressed, blood flow is directed away from the skin and more toward the internal organs, cooling the fingers, causing the crystals to twist the other direction, to reflect more yellow. In cold weather, or if the ring was damaged, the stone would be dark gray or black and unresponsive.
What the Mood Ring Colors Mean : The top of the list is the warmest temperature, at violet, moving to the coolest temperature, at black.