3 sentences

1. 这件艺术品被视为极品。

   zhè jiàn yì​shù pǐn bèi shì​wéi jí​pǐn.

   This work of art is considered a masterpiece.

   Source: Dong Chinese Dictionary

2. 这块羊脂白玉简直是极品。

   zhè kuài yáng​zhī bái​yù jiǎn​zhí shì jí​pǐn.

   This mutton-fat white jade is simply a top-grade masterpiece.

   Source: Dong Chinese Dictionary

3. 遇上这种极品室友，我也真是倒霉。

   yù​shàng zhè zhǒng jí​pǐn shì​yǒu, wǒ yě zhēn shì dǎo​méi.

   I'm really unlucky to have ended up with such a nightmare roommate.

   Source: Dong Chinese Dictionary