He likes to take a walk in the park at dusk.

Harry was searching for the Philosopher's Stone.

This rock is mainly composed of albite.

Olivine is a major component of the Earth's mantle.

This meteorite contains olivine.

This beautiful fluorite is part of my mineral collection.

This beautiful fluorite is part of my mineral collection.

There are many sweet flags blooming in this pond.

This rare stone is something I found in the mountains.

Her ring was adorned with a beautiful garnet.