What is the difference between silver and gold plated sterling silver?

I'm thinking of getting a necklace (a dog tag to be specific) and have the option of either silver or Sterling silver. Sterling silver is MUCH MUCH more expensive. I know Htat is likely that turns your skin green, but if it is a dog tag and it does not really come into contact with my skin would be too good to buy gold-plated silver?

Silver is real money, and must have a stamp on it 925. Silver means it is not real. The silver color is artifficial, is sprayed or painted. http://stores.ebay.com/ismyrnesfashionhouse here you can find real sterling silver necklaces and more authentic.

[affmage source="ebay" results="90"]Silver Plated[/affmage]

Sterling silver?

I'm still hunting for the snowman in sterling silver! Where to go to find something of this old / difficult to find? Also, what is the difference b / wa charm and a pendant?

eBay

[affmage source="ebay" results="90"]Sterling Silver[/affmage]