Mother of pearl is the common name for an iridescent nacre coating, a blend of minerals that are secreted by oysters and other mollusks and deposited inside their shells. Like pearls, mother of pearl jewelry falls in the group referred to as organic jewelry—jewelry that originates from a living creature, plant or organism.
Fiber optic cat's eye glass gets their name from the way they refract light, resembling the oblong center of a cat's eye. These beads feature an attractive color shift and inner glow.