Crystal Opal is a type of opal that is known for its transparent to semi-transparent appearance. It displays a beautiful play of color, which is caused by the unique arrangement of silica spheres within the stone. This optical phenomenon can create vibrant flashes of color, making each piece of crystal opal unique. Typically found in Australia, crystal opal is often used in jewelry due to its striking visual appeal. It can come in various colors, including white, blue, and black, and is valued for its clarity and brilliance. Proper care is essential to maintain its beauty, as it can be sensitive to temperature changes and chemicals.