There are many beautiful stalactites in this cave.

The children were playing hopscotch in the park.

We visited the ancient dolmen.

Amphibole, a type of mineral, is mainly found in igneous rocks.

Anatase is a type of titanium oxide, characterized by the shape of its crystals.

In mineralogy, antigorite is also called leaf serpentine.

This cave is rich in guano.

This stone is a mineral called epidote.

Her necklace had a beautiful cat's eye stone.

Her necklace had a beautiful cat's eye stone.