Gold plating is a way to coat the outside of an object with gold to make it appear as if it is solid gold. Many types of jewelry and home furnishings are gold plated because it is less expensive than making an item out of pure gold. Although many items will have a stamp identifying them as gold plated, others do not. In these cases, it can be tricky to differentiate between gold plating and pure gold.

1.Examine the gold object carefully and find a location that is slightly hidden so that you can perform a test on it. Good options would be somewhere on the back of the object or near a solder point.

2.Place the tip of a metal file against the chosen area and scrape the surface of the object lightly. If you notice a color change as you file, the object is definitely gold plated. If there is no color change, the object may still be gold plated, but it may also be pure gold.

3.Open the bottle of gold test acid and place one drop onto the area that you filed off. If the solution foams up and creates bubbles, the item is gold plated. If there is no foam or bubbles, the piece is made of pure gold.

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Jewelry with any gold content has become of interest since the price of gold has increased. Gold plated jewelry is sometimes difficult to identify, since there are three basic groups of gold jewelry to learn.

Gold jewelry is 9k gold or higher, and may or may not be marked, depending on whether it is made in a studio, or in a large manufacturing plant.

Gold filled jewelry was made in the 1950s and 1960s primarily, and it has more gold content than gold plated jewelry, and is often marked with 1/20 12k gf or similar marks.

Gold plated jewelry has a layer of gold on the surface, and those who test gold with an acid test kit often find that gold plated jewelry will test gold, but is not.

Know the difference in these three categories when purchasing gold jewelry. There is a difference in value.

Gold plated Tungsten Product Manufacturer & Supplier: Chinatungsten Online - http://paper-weight.cn/
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Email: sales@chinatungsten.com
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1.Identify gold plated jewelry by content marks.

Find identification marks on the jewelry. HGE is a common marking for gold electroplate. This is a gold plated jewelry. So is RGP or rolled gold plate, a mark often seen on vintage jewelry. Any gold overlay is gold plated jewelry, including vermeil (pronounced ver-may). Vermeil is gold plating over a sterling silver base, and this is fine jewelry, although the gold plating may wear over time.

2.Look for costume jewelry maker marks.

Know the costume jewelry maker names and look for these. Names like Napier, Robert, Kramer, Monet are not likely to be gold plated. Costume jewelry is often a base metal with a metallic coating that is not 9k gold or above, and probably is not gold at all. This is called goldtone jewelry.

3.Look at the corners and edges

Check the jewelry with a loupe to see if there are worn areas on the corners or edges. This will frequently identify gold plated jewelry, because the top layer wears on the corners and edges, and reveals a different color or type of metal under that surface.

4.Test with an electronic gold tester.

Test questionable items with an electronic gold tester if they are not marked by content or maker. This will accurately identify gold plated jewelry, and the acid test kits will not. Acid test kits recommend scratching the jewelry to get past the surface layer, but good gold plated jewelry often tests gold although it is not. Identify gold plated jewelry before you buy--since it has lesser value than gold filled or karat gold jewelry.

Gold plated Tungsten Product Manufacturer & Supplier: Chinatungsten Online - http://paper-weight.cn/
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
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ESG suitable for WIG welding or TIG welding machine and then forming electrodes.

Electrode material: zirconium tungsten electrode, lanthanum and cerium tungsten electrode tungsten electrodes, without suction device, do not use thorium tungsten electrode.