Anas was asked, "Did the Prophet ﷺ wear a ring?" Anas said, "Once he delayed the: ʿIsha' prayer till midnight. Then he came, facing us ..... as if l am now Looking at the glitter of his ring ..... and said, "The people have offered their prayers and slept but you have been in prayer as you have been waiting for it."  

سُئِلَ أَنَسٌ هَلِ اتَّخَذَ النَّبِيُّ ﷺ خَاتَمًا قَالَ أَخَّرَ لَيْلَةً صَلاَةَ الْعِشَاءِ إِلَى شَطْرِ اللَّيْلِ ثُمَّ أَقْبَلَ عَلَيْنَا بِوَجْهِهِ فَكَأَنِّي أَنْظُرُ إِلَى وَبِيصِ خَاتَمِهِ قَالَ إِنَّ النَّاسَ قَدْ صَلَّوْا وَنَامُوا وَإِنَّكُمْ لَمْ تَزَالُوا فِي صَلاَةٍ مَا انْتَظَرْتُمُوهَا  

The ring of the Prophet ﷺ was of silver, and its stone was of silver too.  

أَنَّ النَّبِيَّ ﷺ كَانَ خَاتَمُهُ مِنْ فِضَّةٍ وَكَانَ فَصُّهُ مِنْهُ وَقَالَ يَحْيَى بْنُ أَيُّوبَ حَدَّثَنِي حُمَيْدٌ سَمِعَ أَنَسًا عَنِ النَّبِيِّ ﷺ