石英

rǔ shí yīng

乳石英

milk quartz

tā yǒu yī kuài shí yīng biǎo

他有一块石英表。

He has a quartz watch.

tā fā xiàn yī kuài shí yīng tǎng zài shā tān shang

她发现一块石英躺在沙滩上。

She found a piece of quartz lying on the sand.