Men are prohibited from the use of ornaments of gold, such as rings and the like, because they are expressly forbidden by the Prophet. Ornaments of silver are likewise unlawful, but exceptions are made with respect to signet rings, girdles, or swords, which may be ornamented with silver. (Hidayah, vol. iv. p. 92). Ibn Zuhair says the Prophet condemned the use of little bells as ornaments for children, for he said there was a devil in every bell. Ibn Malik says the Prophet forbade the wearing of gold rings, and he considered it just as bad to use gold ornaments. (Mishkat, book xx. ch. ii.)
The Wahhabis condemn the use of ornaments and silk dresses.
Based on Hughes, Dictionary of Islam