Sulaiman al-A'mash الأعمش / سليمان بن مهران · Chapters on Dress

It was narrated from Anas bin Malik that the Messenger of Allah (ﷺ) wore a silver ring with an Ethiopian gemstone, and he used to ear the stone in towards his palm.

It was narrated from ‘Abdullah bin Ja’far that the Prophet (ﷺ) used to wear a ring on his right hand.