2 sentences

1. 金刚石一般是无色的。

   jīn​gāng​shí yī​bān shì wú​sè de.

   Diamonds are usually colorless.

   Source: CCMatrix

2. 这就是在南非发现的第一颗金刚石。

   zhè jiù​shì zài nán​fēi fā​xiàn de dì​yī kē jīn​gāng​shí.

   This was the first diamond found in South Africa.

   Source: CCMatrix