It was narrated from Ibn 'Umar that:
The Messenger of Allah [SAW] put on a ring of gold, and he used to wear its stone (Fass) next to his palm. Then the people started to wear rings of gold. Then the Messenger of Allah [SAW] discarded it, and the people discarded their rings. Then he acquired a ring of silver with which he used to seal letters, but he did not wear it.