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Thread: Cleaning a tarnished 14K gold necklace

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  1. #1
    us
    Mar 2017
    The North Star State
    Garrett AT Pro & Ace 400
    156
    234 times
    Metal Detecting & American Indian Artifact Hunting

    Cleaning a tarnished 14K gold necklace

    Hi all,

    I was doing some diving yesterday with the AT Pro, and found what I thought was an old copper necklace. I set it in the boat without giving it much thought, and continued to search.


    Imagine my surprise when upon further inspection I saw this beautiful 14K mark on the clasp. The other half of the clasp is marked "583" so, unless it's a fake, it should in fact be GOLD.


    But my question is this. Why does it look so tarnished? Is all of the gold wore off from rolling around at the bottom of the lake for so long? Or, is what I'm seeing merely the tarnish of the silver and copper that makes up the alloy? I'm a little confused because any other gold I have ever found, even 10K, looks like gold the minute you uncover it. I've never really seen tarnished gold before, it doesn't seem right to me.

    This thing may not look so hot, but it's a whopping 24" long, and weighs in at over 17 grams. Does anyone have a good way to get it looking like new again? I was thinking a little acetone bath perhaps? Or, is it just wore down to the point that it is what it is? All advice is appreciated.

    Thanks

  2. #2
    us
    Aug 2011
    ctx 3030 nokta impact Equinox 800
    982
    1163 times
    IMO, no way gold should ever look like that. Try soaking it in olive oil for a day or two

  3. #3

    Oct 2007
    Pennsylvania
    Currently use CTX, Excalibur Have used V3I, DFX, BHID, ATX, Etrac, TDI, Infinium
    222
    291 times
    All Types Of Treasure Hunting
    For some reason I can't see the photos, but 14K should not tarnish. I have seen 10K turn green but cleaned up nicely.
    Best way is to do an acid test and start at 10K.

  4. #4
    Charter Member
    us
    Coin Rescue Tech

    Jun 2014
    Northern O-H-I-O
    F75 LTD, 1280X Aquanaut, & an F2 (loaner)
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    Maybe the clasp is 14k, Id use jewelry cleaner.
    Mzjavert likes this.
    Rescuing Coins 1 Beep at a time

  5. #5
    us
    Mar 2017
    The North Star State
    Garrett AT Pro & Ace 400
    156
    234 times
    Metal Detecting & American Indian Artifact Hunting
    Quote Originally Posted by Loco-Digger View Post
    Maybe the clasp is 14k, Id use jewelry cleaner.
    You know, I thought of that, but then why would it be just as tarnished as the rest of the necklace? I agree that 14K gold should not tarnish. My fear is that it was gold plated, and sold as 14K to some poor, unsuspecting person. Then, he lost it, and after some time being rolled through the sand by the waves, all the plating wore off. I will try to clean it, I've got nothing to lose. I'm also going to look into the acid test. Thanks.

  6. #6
    us
    Sep 2011
    Denver, Colorado
    Garrett AT Pro, AT Gold, ATX, MH7 (oldie!) Minelab Explorer SE Pro, EQ800
    2,315
    2503 times
    I think you've got a fake as it looks like copper to me. May you find some real gold soon! HH ALL

  7. #7
    us
    Darrin

    May 2013
    Minnesota
    Minelab - E-Trac / Excalibur
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    All Types Of Treasure Hunting
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    That's gotta be a fake - All the gold I find in the water comes out beautiful, 10K a little dull; but cleans up nice & quick.

    14K, you'll know as soon as you see it
    AlienLifeForm and Mzjavert like this.
    Trying to find the lost ~


  8. #8
    us
    Mar 2017
    The North Star State
    Garrett AT Pro & Ace 400
    156
    234 times
    Metal Detecting & American Indian Artifact Hunting
    I forgot what it rang up as underwater, so I just ran it under the AT Pro to see what it registers. It shows up as a solid 50. The only things that usually show up as a 50 are pop tabs, nickels, and gold. Based on my experience with the AT Pro, I'm ruling out copper, that would ring up in the 80's.
    Mzjavert likes this.

  9. #9
    us
    Aug 2011
    ctx 3030 nokta impact Equinox 800
    982
    1163 times
    It is possible that it was laying with another metal and it "bled" onto the gold, but it should come off
    Mzjavert likes this.

  10. #10
    us
    Mar 2017
    The North Star State
    Garrett AT Pro & Ace 400
    156
    234 times
    Metal Detecting & American Indian Artifact Hunting
    Quote Originally Posted by b3y0nd3r View Post
    It is possible that it was laying with another metal and it "bled" onto the gold, but it should come off
    I believe there is a fair amount of iron in the water. Maybe that's what is causing it? Still seems fishy to me. I haven't tried cleaning it yet.

    In the meantime, I got my hands on a really good magnifier. What I thought was marked 583, actually reads "505". I'm not sure what that means. As far as I know, that would not meet the purity specs for 14K, or any other common gold content. The only thing I can find on that marking, is there is a 50.5% platinum, called platinum 505. Could this thing be platinum? I doubt it, but who knows. That shouldn't tarnish either, I wouldn't think.

  11. #11

    Jan 2016
    888
    566 times
    All Types Of Treasure Hunting
    14K gold plated.

    Very cheap clasp for anything of value such as gold or platinum
    AlienLifeForm and Mzjavert like this.
    the first 5 days after the weekend are the toughest...

  12. #12
    us
    Jan 2010
    DFW Texas
    Minelab E-TRAC, Garrett ProPointer, Lesche Digger
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    That thing is faker than fake. 14K won't do that, especially in a freshwater lake. Have you ever seen the types of people that wear that style of 'bling' - they usually wear sweatpants in public, ride the bus and don't have two nickels to rub together.

  13. #13
    us
    WP

    Mar 2014
    Dallas,GA
    CZ6A
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    Did you ever find out if it was for sure real or fake?

    I know people will argue this, But I have seen 14k(which a lot of times is actually 12k) look dark brown or black for whatever reason. It will usually clean right up though. I've even had a dark brown or Black looking 18k pocket watch case. No clue what it went through to make it dark, and it cleaned up really easy.

    No, not platinum.

    That type of clasp is used on gold. The copper look is a bad sign though. along with the pitting look. I would also guess fake.
    Last edited by Nitric; Aug 13, 2017 at 10:23 AM.

  14. #14
    us
    Mar 2017
    The North Star State
    Garrett AT Pro & Ace 400
    156
    234 times
    Metal Detecting & American Indian Artifact Hunting
    To be honest Nitric, I kind of gave up on it. I became so convinced it was fake, that I haven't even tried cleaning it yet. You say you've seen brown / black gold clean right up? That gives me a glimmer of hope. Tell me what method you used, and I'll try it. About the only thing I know for sure right now, is that it is NOT copper, even though it looks like it.

    Thanks
    Nitric likes this.

  15. #15
    us
    Sep 2011
    Denver, Colorado
    Garrett AT Pro, AT Gold, ATX, MH7 (oldie!) Minelab Explorer SE Pro, EQ800
    2,315
    2503 times
    How did you come to the conclusion that it is not copper?

    It is copper or a copper alloy, imo.

 

 
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