Sterling silver makes the best jewelry, when it comes to comparing silvers. 925 silver is 92.5% silver and and 7.5% copper, which makes it very durable and stable without compromising the color of the silver. Fine silver is 99.9% silver, which sounds lovely but is much more vulnerable to damage. The endurance and polish of sterling silver is what makes it so ideal for jewelry, especially sterling silver bracelets and rings.
Authentic sterling silver is one of the finest metals to make jewelry with. Sterling silver is mostly pure silver and a small portion of copper. The copper content makes the silver harder and also easier to work with on the jeweler's end. Pure silver does not make great jewelry, as it is too soft and not suitable for daily wear.
While it may come as a surprise, 925 silver is sterling silver. Sterling silver is an alloy of metals, usually silver and copper. In sterling silver, the silver content is 92.5%, while the copper content is 7.5%. Fine silver is referred to as 999.