Yes, it is. You can see it yourself with a little help from a magnet. A magnet will not stick to pure gold but will stick to gold plated or gold filled jewelry. A gold necklace that is pure gold will be stamped with a mark indicating its purity. Best gold necklaces. The marks are "K", "S" and "P". These marks indicate the gold purity in karats, the standard unit of measurement when it comes to the purity of a precious metal.
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