noun
A mineral name; specifically the pyroxene mineral jadeite, one of the two minerals commonly called jade.
ヒスイ輝石は、宝石として珍重される鉱物です。
Jadeite is a mineral prized as a gemstone.
Standard spelling using katakana for ヒスイ and kanji for 輝石.
Kanji spelling for 翡翠 is less common and may be harder to read.
From 翡翠 (ひすい, 'jade') + 輝石 (きせき, 'pyroxene'). The kanji 翡翠 is often replaced by katakana ヒスイ in this compound.