Septarian - Heart

A Septarian heart from Utah, USA, with star-shaped, jagged cavities filled with yellow calcite. Both sides are ground and polished. The heart is attractive from both sides due to its symmetry.

Septarian nodules are sedimentary concretions that grow in clay layers and develop crack-like internal cavities as they dry out. These cracks are later filled with calcite, aragonite, or other minerals, resulting in the characteristic star shape.

Utah is one of the most important deposits worldwide. The heart was cut into a heart shape from a round septarian nodule by the polisher; nothing was dyed. The calcite crystals inside are natural.