Bird's-eye marbles are also commonly known as agate marbles, cat's-eye marbles, and swirl marbles. These marbles are known for their unique coloring and patterns, resembling the eye of a bird, hence the name "bird's-eye marble." Agate marbles are often made out of a translucent or opaque stone, giving them a distinct look. Cat's-eye marbles have a small line of colored glass running through the center, resembling a cat's eye, while swirl marbles have a swirled pattern throughout the marble. These marbles have been popular for generations, with many collectors avidly seeking them out for their beauty and history.
