4 sentences

1. 这些古董是无价的珍宝。

   zhè​xiē gǔ​dǒng shì wú​jià de zhēn​bǎo.

   These antiques are priceless treasures.

   Source: Dong Chinese Dictionary

2. 这件珍宝他一直待价而沽。

   zhè jiàn zhēn​bǎo tā yī​zhí dài​jià ér gū.

   He has been holding onto this treasure, waiting for the right price to sell it.

   Source: Dong Chinese Dictionary

3. 这件古董是价值连城的稀世珍宝。

   zhè jiàn gǔ​dǒng shì jià​zhí​lián​chéng de xī​shì zhēn​bǎo.

   This antique is a priceless treasure.

   Source: Dong Chinese Dictionary

4. 为了买下这件古董珍宝，他不惜花费千金。

   wèi​le mǎi​xià zhè jiàn gǔ​dǒng zhēn​bǎo, tā bù​xī huā​fèi qiān​jīn.

   He didn't hesitate to spend a fortune to buy this antique treasure.

   Source: Dong Chinese Dictionary