Is it permissible to supplicate against whoever stole the wife's gold, and what should the husband do in this regard?

It is permissible to supplicate against the oppressor, based on the words of Allah Almighty: "Allah does not like the public utterance of evil, except by one who has been wronged. And Allah is Hearing and Knowing." The thief is an oppressor, and the Prophet, peace and blessings be upon him, supplicated against him, saying: "May Allah curse the thief who steals an egg and his hand is cut off, and who steals a rope and his hand is cut off." Even if it is better not to do so.