Silver is like gold, pure silver or fine silver is relatively soft and malleable. Fine silver (99.9%) is generally too soft for producing large functional objects.
Sterling silver is the standard for beautiful high-quality silver jewelry and other objects. It's 92.5% pure silver, and is alloyed with secondary metal (copper, germanium, zinc or platinum) for added strength and durability. Unlike gold, but like platinum, silver purities are expressed as units of a 1,000 parts. The most regularly seen silver purities are:
958 : 95.8% pure silver, also known as Britannia Silver
925 : 92.5% pure silver, also known as Sterling Silver
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