Gold-plated jewelry is marked several different ways, but some of the most common markings are "GP," "GEP," "RGP," "HGE" and "HGP." Markings help determine if jewelry is really silver with gold plate or real gold. More »

To clean gold-plated jewelry, brush it with an old toothbrush dipped in baking soda, spray tarnished areas with WD-40 and buff the jewelry with a cotton cloth. This 10-minute procedure requires baking soda, water, a toot... More »

Gold-plated jewelry consists of a lower-quality base metal coated with a very thin layer of gold through a chemical process, while gold-filled jewelry has a thicker layer of gold bonded to a base metal through heat and p... More »

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Gold necklaces and other gold jewelry can be cleaned in similar ways depending on what is prompting the cleaning; if the jewelry is worn regularly and simply needs a routine wash, it can be soaked in a solution of warm w... More »

Clean a gold-plated watch by scrubbing it with a toothbrush and toothpaste to rid its surface of dirt and oil buildup; make sure the watch is waterproof first. Use a small amount of WD-40 to clear up any tarnished areas. More »

To read jewelry markings, also known as hallmarks, use a jeweler's scope to magnify the information, cross-reference the writing with a hallmark database, and note any writing that may indicate metal's purity or year of ... More »

When buying jewelry on eBay, check the period the seller has been a member on eBay, assess his percentage of positive feedback, check the jewelry for markings that verify authenticity, and use a payment method that offer... More »