Her necklace had a beautiful cat's eye stone.

We visited the ancient dolmen.

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

This ancient document describes the use of antimony.

My opponens pollicis muscle hurts.

This stone is a mineral called clinozoisite.

This beautiful stone is a mineral called clinozoisite.

This mineral is called ulexite and has special optical properties.

He succeeded in a difficult project with the spirit of 'ishi no ue ni mo sannen', which means great works are performed by perseverance.

We are aiming to kill two birds with one stone with this plan.