Hadith #5206 (Sunan al-Nasa'i)
Book: The Book of Adornment
Narrator(s): Abu Sa'id al-Khudri, al-Laith bin Sa'd الليث بن سعد, Ali bin Muhammad b. 'Ali b. Abi al-Mada علي بن محمد بن علي بن أبي المضاء, Amr bin al-Harith bin Ya'qub عمرو بن الحارث, Bakr bin Swad'h bin Thmamh بكر بن سوادة بن ثمامة, Da'ud bin Mnswr al-Nsa'iy داود بن منصور النسائي

“The Messenger of Allah  had a ring of silver which he wore on his right hand. It had an Ethiopian stone (Fass), and he used to wear the stone (Fass) next to his palm.”

Source: https://parallelquran.com/hadith/sunan-al-nasai-5206/