Whether it’s the 1970s or the early 2000s, mood rings are often associated with a few different time periods. They became very popular in the ‘70s, but the ‘90s and early aughts also evoke memories of ...

The idea behind a mood ring is simple: Wear it on your finger and it will reflect the state of your emotions. But, how does it work? There isn't a crystal ball to peer into to explain it, but crystals ...