| 摘要 |
The invention relates to a gold alloy composite. This composite consists of a layer of alloy A forming a substrate and of a layer of alloy B forming the plating, the alloy of the layer forming A has the following composition: gold: 30 to 38%, copper: 42.5 to 62.5%, zinc: 0 to 20%, the gold content of the layer B is at least equal to approximately 90%, preferably 95%. Application to jewellery.
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