opal
/ˈəʊpəl/
B1 · Intermediate★★☆☆☆
Simple Meaning
宝石に使われる、光沢があり色とりどりの石
When to Use
💬Daily Conversation📱Social Media
Intermediate — can handle common situations
Examples in Conversation
“彼女の指輪には美しいオパールが付いていて、光に当たると色が変わります。”
“母の誕生日にオパールのネックレスを買おうか考えています。”
Learning Path
▶Full Definition
A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO2·nH2O.