The Messenger of Allah ﷺ wore a silver ring on his right hand set with an Abyssinian stone, and he used to turn the stone toward the inside of his palm.
أن رسول الله ﷺ لبس خاتم فضة في يمينه فيه فص حبشي، كان يجعل فصه مما يلي كفه.
Muslim narrated it in the Book of Clothing and Adornment (2094:62) through several routes from Talha bin Yahya Zarqi, from Yunus, from Ibn Shihab, from Anas bin Malik, who reported it as mentioned.