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Melting down old gold to make new jewelry

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Q. Hi All, I have a lot of 9k & 18k gold rings and necklaces and I wanted to get them melted down and remodeled into new jewellery, however I have been told that although a jeweler will take my gold it will probably end up in a scrap box and new gold will be used. Is this true?

Kelly B [last name deleted for privacy by Editor]
homeowner - Perth, Western Australia, Australia


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A. Gold and other fine jewelry that starts off as a cast piece is made from a process called vacuum casting, the hot metal is poured in a molten state into the mold then the pressure in the mold is reduced to about 2.0 atmospheres or so (which if memory serves is not very much). This forces the metal into all the nooks and crannies, giving you a near perfect positive of your mold.

The reason that most jewelers do not do common vacuum casting is that it is prohibitively expensive, the basic smelting equipment is almost 500 bucks. The stuff for the casting is almost 10,000 USD Hope that explains it.

Marc Banks
- Elizabeth City, North Carolina


November 22, 2010

A. Kelly,
the reason most jewelers won't cast with scrap gold is because you have solder joints in the scrap gold. When the scrap is cast you may get porosity or discolorations in the finished piece. hope this helps.

Peter Bochniak
master jeweler - Algonquin Illinois


March 21, 2008

Q. I am trying to figure out how to remove gold from jewelry. I want to buy old gold plate jewelry & separate it to make a gold brick. 1st of all, is it worth it? My goal was to buy it (jewelry) for $9.00 a gram for 10K & $10 a gram for 14K. Would it be worth while or Profitable to do this? So, how to remove it and is it worth it? Thanks, Tony

Tony O [last name deleted for privacy by Editor]
potential buyer - Springfield, Oregon, USA


March 25, 2008

A. Be aware that recovering the gold from solid gold jewelry is one thing: 10K gold being 10 parts gold out of 24. But recovering gold from gold plated jewelry is something entirely different because the plating is likely to be only millionths of an inch thick. There is probably far more gold in one 10K ring than in a hundred plated ones.

Ted Mooney   Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


June 29, 2008

Q. If you wanted to melt down different jewelry with different K value, how are you able to determine the quality or K or the newly formed item?

chris Beaumont
hobbyist - Melbourne, Victoria


May 17, 2011

Q. I received an 18k plated gold ring not wanting to keep it is it worth anything in the scrap gold stores for melting please reply cheers John

John Byrne
student - NSW


May 18, 2011

A. Hi, John.

Try to sell it on ebay or Craigslist if you don't like it. It's worth almost nothing in intrinsic metal value.

Regards,

Ted Mooney, finishing.com   Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


May 2, 2012

Q. Hi I have a couple of Rings and I have about 6 pins and they all are gold Plated. How much can I sell them for. Thanks.

debbie beck
- tacoma Washington


May 2, 2012

Hi Debbie. Try to sell them as jewelry on Ebay where their beauty may offer some value. There are "We buy gold" stores on every other street corner these days, but gold plating is usually so thin that you'll find that there is almost no intrinsic metal value and they probably don't even want them for free. Sorry.

Regards,

Ted Mooney, finishing.com   Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


February 18, 2015

Q. I just want to know a refiner that melts scrap gold down to a gold bar. How much is it to get this done?

I'm in Sydney area

mark hobourn
n/a - nsw redfern australia
  ^- Privately contact this inquirer -^


February 2015

A. Hi Mark. I know very little about this, but I think I know two things, and unfortunately they both contradict what you'd like to do, sorry :-(

First, you can't just melt it down because that just forms a big mixed blob of worthless brittleness. Please see letter 12200 where Chris Owen explains this, and what must be done instead.

Second, there isn't a good way for the refiner to know what will be involved or what it will cost him or what the product will be worth until he does what is called an "assay" on the material that you want recovered. So free estimates of cost are unlikely. Good luck.

Regards,

wikipedia
Assay

Ted Mooney, finishing.com   Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey

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