Narrated Ibn. `Umar
Allah's Messenger (ﷺ) wore a gold ring or a silver ring and placed its stone towards the palm of his hand and had the name 'Muhammad, the Messenger of Allah' engraved on it. The people also started wearing gold rings like it, but when the Prophet (ﷺ) saw them wearing such rings, he threw away his own ring and said. "I will never wear it," and then wore a silver ring, whereupon the people too started wearing silver rings. Ibn `Umar added: After the Prophet (ﷺ) Abu Bakr wore the ring, and then `Umar and then `Uthman wore it till it fell in the Aris well from `Uthman.
Narrated Abdullah bin `Umar
Allah's Messenger (ﷺ) wore a gold ring, then he threw it and said, "I will never wear it." The people also threw their (gold) rings.
Narrated Anas bin Malik
that he saw a silver ring on the hand of Allah's Messenger (ﷺ) for one day only. Then the people had silver rings made for themselves and wore it. On that, Allah's Messenger (ﷺ) threw away their rings as well. (For the details of this Hadith, see Fath-ul-Bari, Vol. 12, page 438).