noun
hematite
A mineral form of iron oxide; used in jewelry and as an iron ore. The term is a direct loan from English and is used in geological and gemological contexts.
ヘマタイトは鉄の主要な鉱石の一つです。
Hematite is one of the main ores of iron.
彼女はヘマタイトのネックレスを身に着けていた。
She was wearing a hematite necklace.