Silver is a precious metal that is bright-metallic-white in color. It is relatively ductile, second only to gold. It tarnishes easily when exposure to air and will turn greenish to black with age. Fine silver (99.9% pure), like gold, is too soft for making every day wear jewelry, so the silver is usually alloyed with copper to give it strength. The silver used for jewlery is called Sterling Silver, which is at least 92.5% pure and 7.5% other metals, usually cooper.
Silver is the least popular of the precious metals to use for any type of engagement ring because it tarnishes easily and needs to be cleaned and polished very frequently. It is not a strong metal, even with its typical alloys, and will not hold up as a setting for a precious gemstone or diamond.
Metals for Engagement Rings