Midori is my best friend.

Her colourful dress stood out at the party.

Mineral oil is often used in the manufacture of cosmetics and pharmaceuticals.

He is majoring in mineralogy at university.

This mineral is called chalcanthite and it has a beautiful blue color.

This mineral is called bieberite, and it is very rare in the world of mineralogy.

He called me back immediately after he hung up the phone.

His new car is yellow-green.

This greenschist is geologically very interesting.

This area is rich in green tuff.