Gold is compacted by a mechanical force or high temperature welding, the thin gold foil wrapped in gold or silver or metal matrix surface method. Generally used for larger ornaments, such as rings, bracelets and so on.
There are many foreign imports of gold jewelry compared this kind of jewelry and the appearance of glittering gold jewelry can be a riot of colours appeal there is not a fraction of difference on the market price is low. This effect to the "gaudy" layer in the layer is gold. La alloy gold jewelry is not inherent material such as gold but some precious metals aluminum, copper and zinc in the surface of these materials coated with a layer of gold as the inner packing paper La like material covered play a decorative role compared to comparable gold jewelry. Gold jewelry gold depends on the success of the process. This process has high requirements such as the production of gold jewelry compared with the amount of its characteristics and must indicate the proportion of gold from the 1/10.14K.GF type such as La exergy package 14K gold jewelry materials it shall account for 1/10 of the weight of the whole jewelry or is not qualified. If the gold material adopts 1OK gold or gold is observed following weight less than 1/20 of the weight of the whole jewelry is not using the name "gold".
Because this kind of process is complex, and the cost is high, but the quality not exactly good, so it was almost completely replaced by gold plating. These announced gold-coverd jewelry in the market, in fact almost all gold plated products.