I had one back in middle school in the 70s, but back then, we called it junior high. Today, I wonder if my fitness watch is similar to my stress indicator.

Mood rings were a huge fad in the 1970s, introduced around 1975. These rings contained liquid crystal-filled stones that changed colors based on the temperature of the wearer’s skin, which was believed to reflect their emotional state. The concept was marketed as a way to “see your emotions” in real time.
How They Worked
The liquid crystals inside the ring were thermochromic, meaning they changed colors based on temperature fluctuations. The idea was that when you were calm or happy, your body temperature was slightly higher, and when you were stressed or anxious, it was lower.
Color Meanings (According to Marketing)
- Blue – Relaxed, calm, happy
- Green – Normal, at ease
- Amber – Nervous, unsettled
- Gray/Black – Stressed or cold
Popularity and Cultural Impact
Mood rings were trendy among teenagers and young adults, fitting into the New Age and self-awareness movements of the time. They were sold in jewelry stores, department stores, and even gas stations. The concept of emotions being visible through jewelry fascinated people, even though the science behind it was more about skin temperature than actual emotions.
While the 70s craze eventually faded, mood rings have remained a nostalgic item, resurfacing in various forms over the years. Have you ever owned one?
How They Worked
The liquid crystals inside the ring were thermochromic, meaning they changed colors based on temperature fluctuations. The idea was that when you were calm or happy, your body temperature was slightly higher, and when you were stressed or anxious, it was lower.
Color Meanings (According to Marketing)
- Blue – Relaxed, calm, happy
- Green – Normal, at ease
- Amber – Nervous, unsettled
- Gray/Black – Stressed or cold
Popularity and Cultural Impact
Mood rings were trendy among teenagers and young adults, fitting into the New Age and self-awareness movements of the time. They were sold in jewelry stores, department stores, and even gas stations. The concept of emotions being visible through jewelry fascinated people, even though the science behind it was more about skin temperature than actual emotions.
While the 70s craze eventually faded, mood rings have remained a nostalgic item, resurfacing in various forms over the years. Have you ever owned one?
If you had a mood ring back then, you’ll probably need one of these!
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