Narrated Abu Huraira:
The Prophet forbade the wearing of a gold ring.
Vol: 007 Book: 072 Hadith: 754
A Selected Hadith
Narrated 'Abdullah:
Allah's Apostle wore a gold or silver .. ring and placed its stone towards the palm of his hand. The people also started wearing gold rings like it, but when the Prophet saw them wearing such...
I have prostrated my face to the One Who created it, and gave it hearing and sight by His might and His power. Glory is to Allah, the Best of creators.
Info: At-Tirmidhi 2/474, Ahmad 6/30, and Al-Hakim.