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What is sterling silver?

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Hello and welcome to CoreFacts, where we're always short on time and big on science. I'm Dane Klima.

Check this out. Too celebrate our anniversary and our wonderful listeners, we are holding our first-ever Be a CoreCast Host for a Day Contest. You, faithful listener, have a chance to host your very own episode of CoreCast. The randomly chosen and lucky winner will get a chance to interview a scientist or talk about cool science topics. If you think you've got what it takes, just send your name and e-mail address to The contest ends Friday, September 26, 2008, so send us an e-mail already. And good luck.

Now to today's CoreFact. Today's question is about sterling silver.

What is sterling silver?

Sterling silver is the standard of quality for articles containing 92.5% silver and 7.5% copper.

And now you know. Join us every week for a new CoreFact. If you're looking for more in-depth science coverage, please check out the USGS CoreCast at To have your own question potentially featured on the air, send it to or leave a voicemail with us at 703-648-5600; however do remember that this may be a long distance charge, so long distance fees may apply.

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