Du'a At the time of wearing Jewels

According to Imam Ja’far-e-Sadiq (a.s.)

the Holy Prophet. (s.a.w.a.) uses to wear the ring on the fret finger and has prohibited wearing of ring on the middle finger.

According to Imam Ja’far-e-Sadiq (a.s.)

A ring should be worn at the very end of the finger where it joins with palm. According to Fiqhur-Riza one should recite the following prayer while wearing the ring:

اَللّٰهُمَّ سِمْنِي بِسِيْمَاءِ الْإِيمَانِ وَ اخْتِمْ لِي بِالْخَيْرِ وَ اجْعَلْ عَاقِبَتِيْ إِلٰى خَيْرٍ وَ إِنَّكَ أَنْتَ الْعَزِيْزُ الْكَرِيْمُ.

Transliteration:

"Allaahumma simnee be-seema-il eemaane wakh-tiim lee bil-khayre waj-a’l a’aqebatee elaa khayrin innaka antal a’zeezul kareem."

Translation:

"O Allah let the sign of faith be the cause of my recognition! Let my end be worthwhile and let there be good for me even in the world to come. It is well known that Thou art All Mighty, All-Wise and All Generous!"

It is Sunnat to have a silver ring. Men are prohibited from wearing gold ring. Wearing iron, steel or brass ring is makrooh for both men and women. Therefore according to Imam Ja’far-e-Sadiq (a.s.), The Holy Prophet (s.a.w.a.) used to wear a silver ring.

According to another tradition

the Holy Prophet (s.a.w.a.) asked men not to wear an iron ring while praying and strictly prohibited wearing of brass ring.