(I have yet to find any to try it out with a magnet but if anyone else has, I’d love to know the result.)Ĥ) The other less common gold alloy colors include purple (gold with aluminum), green (gold with silver and copper or cadmium), and rose (gold with copper). 18K blue white gold is composed of 75% gold, 25% iron. Thus the common colors of gold alloys have no reason to be attracted to a strong magnet, that I can find.ģ) There is ONE gold alloy that might be legitimately magnetic.
There is some question about the magnetic properties of nickel but the consensus seems to be that it can be considered nonmagnetic for this purpose. For white gold the other metals may be platinum, palladium, zinc, and/or nickel. For yellow gold, the other metals are likely to be silver and copper (NOT magnetic). Helmenstine, online at Chemistry:ġ) a clasp with a spring in it should not be tested this way as even a 14K circle spring or lobster clasp does have a tiny iron spring in it, and a magnetic response is OK there! But this objection does not apply to the fishhook type clasp which has no spring (often used on pearl strands) or other kinds of non-spring clasps.Ģ) 10K or 14K gold is of course not pure gold it’s alloyed with other metals. So I've been doing my best to make inquiries of knowledgeable people about the issue, specifically, are there ANY alloys of gold which contain iron (would be magnetic), or is there any other legitimate reason a gold piece would respond to a magnet? Here's a summary of what I've found from putting the question to the International Gem Society forum, and also from an article on gold alloys written by Dr. Returning such a piece to a seller on eBay frequently brings wrath on my head, as the seller is going by the mark on the piece and is understandably upset by being left “holding the bag”.
Rare earth magnets are admittedly a lot stronger than the older common magnets, so an old weak horseshoe magnet may not do much of anything, while a rare earth magnet causes that same piece of jewelry to leap in the air. But magnetic is magnetic, and I have been taught that gold and the usual alloy metals are NOT magnetic. Lately I have found many instances of jewelry (particularly earrings, earring backs, and non-spring clasps, also some pendant bails) which are marked 10K or 14K and yet are attracted to a rare earth magnet.
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