Ring Of The Prophet Muhammad صلى الله عليه وسلم

He had a silver ring.his stone was Abyssinian. he wore it on his right hand. He had another ring which he used to seal(stamp) his letters to foreign regions with. 

It was engraved with three words that read.Muhammad,the messenger of Allah. He used to remove this ring when he had to relieve himself. 

The amazing part of this ring was that when he stamped with it.it never read backwards,but maintained the true words of "Muhammad RasululLah"

 صلى الله عليه وسلم