Anas b. Malik reported that Messenger of Allah ﷺ wore a silver ring on his right hand which had an Abyssinian stone in it, and he kept its stone towards the palm.
أَنَّ رَسُولَ اللَّهِ ﷺ لَبِسَ خَاتَمَ فِضَّةٍ فِي يَمِينِهِ فِيهِ فَصٌّ حَبَشِيٌّ كَانَ يَجْعَلُ فَصَّهُ مِمَّا يَلِي كَفَّهُ