quartzKK [ˈkwɔrts] ｜ /ˈkwɔrts/
GEPT 中高級
C2noun
a mineral made up of silicon dioxide in crystal form that is typically found in most rocks, including sandstone and granite. Quartz may have impurities that give it a yellow or brownish color, and it is known for being very hard and shiny.
The countertops in my kitchen are made of quartz, which not only looks beautiful but is also durable and scratch-resistant.
石英（礦物）
C2noun
a type of colorless glass that is produced using almost pure silica
The jewelry maker used a quartz glass to make a stunning and durable watch face.
石英玻璃