Friendly Metal Detecting Forums   Deteknix
List all sponsors

Go Back   Friendly Metal Detecting Forums > Everything About Finds > Cleaning Your Finds

Reply
  
Thread Tools Display Modes
  #1  
Old 03-10-2013, 09:44 PM
007tallguy's Avatar
007tallguy 007tallguy is offline
Elite Member
 
Join Date: Oct 2010
Location: Nova Scotia, Canada, eh.
Posts: 7,348
Question acid testing "gold"?

a question for those of you who have tested gold:
i have a chain here (jewelry box find, lol) and it's passed both the 10K and the 14K acid test, but failed the 18K test.
just wondering how does brass stand up to the acid, does it totally dissolve and fail even with the weakest (10K) acid test?
i also soaked on end of this chain in vinegar overnight and no "green" showed up on it.

i always thought this chain was brass, but could i indeed have 23 grams of 14K here..???

Pete
Attached Images
 
Reply With Quote


  #2  
Old 03-10-2013, 09:46 PM
roob47's Avatar
roob47 roob47 is offline
Elite Member
 
Join Date: Jul 2010
Location: Patterson , ca
Posts: 1,294
Default

Usually whatever is not gold dissolves..... You might have something there keep us posted!

__________________
AT GOLD/ACE 250//DUAL FIELD P.I.

Reply With Quote


  #3  
Old 03-10-2013, 09:51 PM
iBuySilver's Avatar
iBuySilver iBuySilver is offline
Elite Member
 
Join Date: Feb 2013
Location: Alabama
Posts: 529
Default

looking like

__________________
Tesoro vaquero<> Garrett Pro Pointer<>Grey Ghost <>Lesche Digging Tool<><>Gold=0000<>

Reply With Quote


  #4  
Old 03-10-2013, 10:12 PM
007tallguy's Avatar
007tallguy 007tallguy is offline
Elite Member
 
Join Date: Oct 2010
Location: Nova Scotia, Canada, eh.
Posts: 7,348
Default

ok, thanks guys.
i just retested it with the same results!
made a minor repair to a break in it and i might end up wearing this!
Reply With Quote


  #5  
Old 03-10-2013, 10:57 PM
Cfmct's Avatar
Cfmct Cfmct is offline
Administrator
 
Join Date: Jan 2006
Location: SW Connecticut
Posts: 30,095
Default

The acid will bubble and turn white when applied to brass before it vanishes on the test stone. sounds like you may have real gold


Sometimes plated stuff gold over copper dropped in bleach will start to bubble and turn black.

__________________
Excalibur1000
Sunspot Scoop 720i Hybrid
Whites MXT All Pro
Banned Spammers 857

Reply With Quote


  #6  
Old 03-11-2013, 06:22 AM
007tallguy's Avatar
007tallguy 007tallguy is offline
Elite Member
 
Join Date: Oct 2010
Location: Nova Scotia, Canada, eh.
Posts: 7,348
Default

Originally Posted by Cfmct View post
The acid will bubble and turn white when applied to brass before it vanishes on the test stone. sounds like you may have real gold


Sometimes plated stuff gold over copper dropped in bleach will start to bubble and turn black.
ok, thanks for the info Craig!
definitely no bubbling or turning white with this chain, half an hour after testing it, the same gold colored streak was still on the stone where i applied the 10K/14K acids but was gone almost instantly where i put the 18K acid.

my first gold of the year and i didn't even need the MD to "find" it, ha!
Reply With Quote


  #7  
Old 03-11-2013, 06:53 AM
NHKeith NHKeith is offline
Elite Member
 
Join Date: Jul 2010
Location: New Hampshire(Live Free or Die)
Posts: 3,049
Default

so I had a big hunk of brass that i swear was gold, maybe rolled gold. i put the 10k acid, and it stayed for a minute and I was counting my riches, and then 5 minutes Later I look back and it was all dissolved ...

__________________
Etrac, AT PRO, Garrett pp, lesche 2013 totals:

Reply With Quote


  #8  
Old 03-11-2013, 07:21 AM
itsaring!'s Avatar
itsaring! itsaring! is offline
24K Larry
 
Join Date: Oct 2011
Location: Dirty South
Posts: 13,385
Default

Some of that if it is brass just put it around your neck during the summer one day when you are sweating. I found an anniversary medallion for the railroad back in the seventees on a gold looking chain. Put it on years later to wear. Left the ugliest green ring around my neck you've ever seen
Hope that chain is the real deal because its pretty unique looking. There are ways new gold forgers are making things to pass an acid test with the value of gold so high. We can never be 100% accurate. But usually we can weed out the junk. My thickest gold chain i ever found was a fake. They even used thicker gold plating.
On an appraisal if they tell you it is junk, always hang onto it and maybe get a second opinion. If they offer to throw it in the trash for you its probably real.

__________________
In the battle of Thermopylae the Persian Armies demanded that the Greeks surrender their weapons. King Leonidas responded saying "Molon Labe." Translation "Come and get it".

Reply With Quote


  #9  
Old 03-11-2013, 08:46 AM
007tallguy's Avatar
007tallguy 007tallguy is offline
Elite Member
 
Join Date: Oct 2010
Location: Nova Scotia, Canada, eh.
Posts: 7,348
Default

Originally Posted by itsaring! View post
Hope that chain is the real deal because its pretty unique looking. There are ways new gold forgers are making things to pass an acid test with the value of gold so high. We can never be 100% accurate. But usually we can weed out the junk. My thickest gold chain i ever found was a fake. They even used thicker gold plating.
On an appraisal if they tell you it is junk, always hang onto it and maybe get a second opinion. If they offer to throw it in the trash for you its probably real.
oh yes, if there's a way to fake something, they'll certainly do it!
but this chain has been in my late mum's jewelry box for the past 40+ years, and before that it probably came from her grandmother, so there's no doubt that it's old! i can only guess and say maybe late 1800's to very early 1900's.
maybe i'll try a couple of close-ups of the links and the clasp and post pics in the "id my finds" section and see if anyone is familiar with the design.

Pete
Reply With Quote


  #10  
Old 03-11-2013, 09:20 AM
007tallguy's Avatar
007tallguy 007tallguy is offline
Elite Member
 
Join Date: Oct 2010
Location: Nova Scotia, Canada, eh.
Posts: 7,348
Default

i've posted some close-up in the "id your finds" section.
http://metaldetectingforum.com/showthread.php?t=146020
Reply With Quote


  #11  
Old 03-11-2013, 09:23 AM
Irons's Avatar
Irons Irons is offline
Elite Member
 
Join Date: Jan 2012
Location: Michigan
Posts: 7,973
Default

Nice find 007

__________________
AT PRO X 2

Reply With Quote


Reply


Thread Tools
Display Modes

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Acid Testing Your Gold Silver & Platinum FL-Hunter Help To ID My Finds 6 08-11-2013 10:30 AM
Questions about testing for gold using a stone and acid Ice Scratcher What's the Value? 3 06-30-2013 09:55 PM
Testing silver with 18k gold acid Video by ME! JBEXPRESS General Hobby Discussion 3 03-12-2013 03:05 PM
acid testing 22k gold? hoodleehoo Help To ID My Finds 0 01-30-2013 01:56 PM


All times are GMT -4. The time now is 09:14 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.