Cat's-eye marble

Eyes look dewy and glistening—as if just after a good cry—radiating an innocent charm that makes anyone want to protect them.
Naturally catches the light to create a sparkling "catchlight" effect from any angle, doubling the chances of a perfect shot without needing digital touch-ups.
Eyes appear clear and luminous—resembling the look of naturally light-colored irises—rather than appearing cloudy or hazy.