unpolished

She wore a simple silver ring with an unpolished stone.

用法提示：unpolished作定语修饰stone，表示宝石未经打磨。

I like the look of unpolished wood on the table.

用法提示：unpolished作定语修饰wood，表示木材未经抛光。

His boots were dirty and unpolished after the long walk.

用法提示：unpolished作表语，表示靴子未被擦亮的状态。