quartz
US
UK quartz n: (rock crystal) (矿物)
SC 石英，水晶 shí yīng，shuǐ jīng
TC 石英
TC 石英
The woman's necklace was made of quartz.
quartz n as adj: (made of or using quartz)
SC 石英做的 shí yīng zuò de
SC 水晶的 shí yīng zuò de，shuǐ jīng de
Melanie chose a quartz engagement ring instead of a diamond one.