If a jewel falls into the mire , it remains as precious

直译：尽管一件珠宝掉进了泥里，它仍然还是非常珍贵的
意译：是金子，它终究还是会发光的。

就算珠宝掉进泥潭，他始终还是珍贵的

真金不怕火炼 If a jewel falls into the mire, it remains as precious as before; and though dust should ascend to heaven, its former worthlessness will not be altered. ( AL Jaber )宝石即使落在泥潭里，仍是一样可贵；尘土纵然扬到天上，还是没有价值。（贾比尔）