There are two reasons for this. First of all, the objective weight of a gold bracelet exists, but the bearing capacity of a person's palm and wrist is different. Often we think it's light in our hands and heavy on our wrists.
The second is that dirt and dust are attached to me, which makes me heavier. I need to clean or wipe it next time. It is recommended to keep the habit of wiping regularly with a clean paper towel or towel.