There is a rumor that the cat turns into a human at night.

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

This beautiful fluorite is part of my mineral collection.

This beautiful fluorite is part of my mineral collection.

Harry was searching for the Philosopher's Stone.

Her ring was adorned with beautiful turquoise.

Aragonite is a type of calcium carbonate, and its crystal structure is distinctive.

Aragonite is a type of calcium carbonate, and its crystal structure is distinctive.

This beautiful garnet is part of my mineral collection.

This rock contains cassiterite.