Identifying Sterling Silver
Martha Stewart provides some great tips on how to recognize sterling silver:
Authentication Hallmarks
Look for markings or stamps on the silver. "The first thing you should look for when you found an item you suspect to be real silver, is markings like a stamp or hallmark," explains Nicolas Martin, flea market expert and founder of Flea Market Insiders. "A silver object that is to be sold commercially is, in most countries, stamped with one or more silver hallmarks indicating the purity of the silver, the mark of the manufacturer or silversmith, and other markings to indicate date of manufacture and additional information about the piece. International sellers of silver will stamp silver as 925, 900 or 800." These numbers indicate the level of purity of the silver. Sterling silver has a purity of 92.5 percent or higher.
The Magnet Test
Most precious metals-like gold and copper-are nonmagnetic, and silver is no exception. Grab some magnets and see if they are drawn to your object. "Silver is not noticeably magnetic, and exhibits only weak magnetic effects unlike iron, nickel, cobalt, and the like," says Martin. "If your magnet sticks strongly to the piece, it has a ferromagnetic core and is not silver." Fake silver or silver-plated items are generally made of other metals. This is an easy test that can give you a good idea on whether your item is real silver or not.
The Odor Test
Sterling silver is odorless, so go ahead and smell the piece in question. Does it have a noticeable odor? If you can smell sulfur or a distinct metallic fragrance, then it is not sterling silver. The item could be silver-plated, but a scent indicates that it is not made entirely of sterling silver. This is a great test to conduct for those of us who have a strong sense of smell.
The Polish Test
Silver needs to be polished on a regular basis. "After checking for stamps and markings and using the magnet trick, pull out the soft white cloth you brought with you!" says Whitney. "Silver also oxidizes and tarnishes. Rub the tarnished piece as if polishing. If no black residue appears on your cloth, it's not silver." Polishing the silver item is a very good indicator of its authenticity. Rust or a lack of oxidation indicates that the item is made of a different material from silver.
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