Moss Stone refers to rock material partially or fully covered with living moss, creating a fusion of mineral solidity and soft green growth. The stone itself may vary in type—granite, sandstone, or river rock—but its defining feature is the velvety layer of moss that clings to its surface. This covering ranges in color from bright, almost luminous green to deep, shadowy tones, often giving the stone a weathered, timeless quality.

Found in damp forests, shaded riverbanks, or humid garden corners, moss stones thrive where moisture and shade create a favorable habitat. Sometimes referred to as living stones, they serve both ecological and aesthetic roles, offering shelter for small insects and helping retain soil moisture. In cultural contexts, moss stones are revered in Japanese gardens for their symbolism of age, tranquility, and natural harmony. As ground materials, they embody patience and quiet endurance, softening hard landscapes with a touch of living texture.