Natural Stone Characteristics

Natural pit

Formed by surface weathering or pressure release after crystallization.

Fissure

Secondary cracks formed by tectonic movements after rock formation.

Internal fissure

Natural ice-crack patterns from pressure changes during crystallization.

Paragenetic mineral

Minerals that crystallized together with the host stone under the same conditions.

Color zoning

Caused by uneven distribution of trace elements during crystal growth.

Black spot

Tiny mineral inclusions or carbon residues trapped inside.

Internal inclusion

Trapped minerals or gas-liquid cavities formed during crystal growth.

Silky inclusion

Fine fibrous structures reflecting light to create a silky luster.