diamond

/ˈdaɪmənd/

a transparent piece of diamond that has been cut and polished and is valued as a precious gem

中文释义：钻石；金刚石

She wore a beautiful diamond necklace to the gala event.

她戴着一条漂亮的钻石项链参加盛会。

Diamond is one of the hardest natural materials known to man.

钻石是人类已知的最坚硬的天然材料之一。