Aquarius birthstone is Amethyst, which is known for its stunning purple color. This beautiful gemstone is often associated with healing, spirituality, and calmness. In astrology, Amethyst is believed to bring balance and harmony to the wearer, and it is said to enhance intuition and psychic abilities. The adult coloring book featuring Amethyst as the theme is designed with crisp black lines and a white background, creating a striking contrast that allows the vibrant purple color to stand out. With intricate and detailed illustrations, this coloring book offers a therapeutic and relaxing experience for individuals of all ages. Whether you are an astrology enthusiast or simply appreciate the beauty of gemstones, this coloring book is a perfect way to explore your creativity while immersing yourself in the world of Amethyst.