He is feeling loneliness.

There are many sweet flags blooming in this pond.

This stone slab is an ancient artifact.

In this museum, lithographs from the 19th century are on display.

My mother underwent surgery for gallstones.

He is drawing a picture on a slate.

A beautiful gemstone was embedded in her ring.

This building is made of marble.

He started a fire using a flint.

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