Sahih Muslim 5486
The Book of Clothes and Adornment
حَدَّثَنَا يَحْيَى بْنُ أَيُّوبَ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ الْمِصْرِيُّ، أَخْبَرَنِي يُونُسُ بْنُ يَزِيدَ، عَنِ ابْنِ شِهَابٍ، حَدَّثَنِي أَنَسُ بْنُ مَالِكٍ، قَالَ كَانَ خَاتِمُ رَسُولِ اللَّهِ صلى الله عليه وسلم مِنْ وَرِقٍ وَكَانَ فَصُّهُ حَبَشِيًّا .
Anas b. Malik reported that the ring of Allah's Messenger (ﷺ) was made of silver and it had an Abyssinian stone in it
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.