hi,Each of us has a unique story that begins at the moment of birth. Our birth month rings are a symbol of these stories, a combination of art and astrology that points to your personality and specific aspects. These rings are not only a beautiful adornment for your hands, but also carry special energies and properties that can influence your daily life.The approximate weight of each ring is about 10 grams for gold and about 9 grams for silver, and a file that is hollowed out inside the outer shell for less weight and is thinner makes the weight of each ring about 1.5 grams lighter. These rings are designed to be used by both women and men. Their inner size is 20 mm, which can be easily changed because the arm of the ring is quite simple. The sizes are clear in the photos.