Mood rings reportedly were invented in 1975 by two New York inventors, Josh Reynolds and Maris Ambats. However, Marvin Wernick claimed to have developed the mood rings a decade earlier than that, ...

Most mood rings work in the same way: The stone itself is made up of thermotropic liquid crystals, which move and bend in response to changes in temperature.When these crystals move, the colour ...

Mood rings were invented way back in 1975 with the intention that the hue would correspond to the way that you were feeling. It does this through body temperature and a specialised liquid crystal.

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