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<p>[QUOTE=&quot;Any Jewelry, post: 8467792, member: 2844&quot;]Gold filled is a technique that wasn&#039;t around at the time. Sellers, eh.<img src="styles/default/xenforo/smilies/wink.png" class="mceSmilie" alt=";)" unselectable="on" /></p><p>Gold plating is a general term which covers several techniques.</p><p><br /></p><p>These Biedermeier brooches were made in both gold plated and gold.</p><p>On the gold ones the gold is extremely thin, because there weren&#039;t as many commercially exploited goldfields at the time, which made gold very expensive. That is also why some of them have a silver back.</p><p>Because of the thin metal, these brooches are fragile. Sometimes the hollow part between front and back was filled with a natural resin or pitch for strength.</p><p><br /></p><p>There are also silver and pinchbeck Biedermeier brooches. Pinchbeck looks like gold, but it is a copper alloy.</p><p><br /></p><p>I don&#039;t see wear of a gold layer, so it probably isn&#039;t plated. But if you want to be sure, have it tested by a jeweler who knows antique jewellery. They have to know this type of jewellery, and how vulnerable it is.[/QUOTE]</p><p><br /></p>

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