Color-changing ring, also called emotional ring, is made of temperature-sensitive color-changing liquid crystal. The color-changing ring can sense your temperature and test your mood. Color-changing ring gemstones are made of rare earth materials and are sensitive to temperature.
Because when people's mood changes, their body temperature will fluctuate.
The ring can display different colors according to the change of human body temperature, such as black, brown, dark blue, green and so on. Color-changing rings have dozens of shapes, such as hearts, petals and stars. The color-changing circle can penetrate into your mind, which is a magical test, a "lie detector" tool and a caring product.