noun
opal
Mineralogy term for the gemstone opal. Often referred to by the loanword オパール in everyday contexts.
See also: オパール
蛋白石は虹色の輝きを持つ宝石です。
Opal is a gemstone with iridescent brilliance.
Common loanword for opal, used in everyday language, while 蛋白石 is a technical mineralogy term.
From Chinese 蛋白石 (dànbáishí), literally 'egg-white stone', referring to the stone's appearance.