2016年1月5日星期二

Sterling silver is an alloy of silver containing 92.5% by mass of silver and 7.5% by mass of other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925.

Fine silver, for example 99.9% pure silver, is generally too soft for producing functional objects; therefore, the silver is usually alloyed with copper to give it strength while preserving the ductility and appearance of the precious metal. Other metals can replace the copper, usually with the intention of improving various properties of the basic sterling alloy such as reducing casting porosity, eliminating firescale, and increasing resistance to tarnish. These replacement metals include germanium, zinc and platinum, as well as a variety of other additives, including silicon and boron. Alloys such as argentium silver have appeared in recent decades.

The silver jewelry and accessories available at iDream Jewelry are made of beautiful sterling silver. For our collection, we have chosen classic designs created by some of the finest silver craftsmen. Now learn how to buy sterling silver jewelry?

Click to see more: https://en.wikipedia.org/wiki/Sterling_silver

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