Then take a closer look at whether there are fewer cracks in the ice. If this is the case, it is normal, which means that sweat or grease secreted by oneself fills the tiny cracks in each column of tourmaline bracelet, reducing the traces of white ice cracks, thus increasing the transparency and refraction of tourmaline and making the color of the bracelet look deeper (for example, the principle is that no matter what the bracelet is put into water, the refraction of colored ice cracks increases, but once it is taken out, it will soon return to its original state).