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Have I Found A Solid Block Of Silver?

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Pillar of the Community
United Kingdom
633 Posts
 Posted 07/18/2021  09:16 am Show Profile   Bookmark this topic Add TobyJ to your friends list Get a Link to this Message
Or platinum?

Specific gravity is 8.61.

Thanks for any help.

Weight is 800 grams.






Edited by TobyJ
07/18/2021 09:23 am
Pillar of the Community
United States
5634 Posts
 Posted 07/18/2021  09:47 am  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
Perhaps a projectile fragment from times past.
Bedrock of the Community
United States
41322 Posts
 Posted 07/18/2021  10:35 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
( I'm no pro, it's just my humble opinion )
Searched 6.5 +/- Million Cents Since 1971
Pillar of the Community
United Kingdom
633 Posts
 Posted 07/18/2021  10:50 am  Show Profile   Bookmark this reply Add TobyJ to your friends list Get a Link to this Reply
When polished with a cloth, it leaves black residue on the cloth which is an indicator of being silver. It is not magnetic. Just done a hydrochloric and sulphuric acid test for platinum and it isn't platinum.
John, the specific gravity equals copper beryllium but I'm sure this isn't a copper alloy.
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Canada
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 Posted 07/18/2021  10:55 am  Show Profile   Bookmark this reply Add oriole to your friends list Get a Link to this Reply
The specific gravity is way too low for silver.
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United Kingdom
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 Posted 07/18/2021  11:06 am  Show Profile   Bookmark this reply Add TobyJ to your friends list Get a Link to this Reply
I'm seeing that German silver has a specific gravity of 8.58. Could this be a silver alloy of some sort?
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Canada
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 Posted 07/18/2021  11:51 am  Show Profile   Bookmark this reply Add oriole to your friends list Get a Link to this Reply
"German silver" does not have any silver in it.

It is a simple matter for any coin dealer or jeweller to do a test to see if it has any significant % of silver in it.
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20945 Posts
 Posted 07/18/2021  12:04 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
Such a weird find. I would definitely take it to a jeweler or LCS and have them tell you if it has any silver in it. I do note that metals other than silver could leave behind dark residue on a cloth. Please follow up on this thread when you do find out what you've got. Thx!
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 Posted 07/18/2021  12:53 pm  Show Profile   Bookmark this reply Add TNG to your friends list Get a Link to this Reply
Maybe it is a meteorite ? Pretty cool and looks worth some money.
I hope it is very valuable.

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Edited by TNG
07/18/2021 12:56 pm
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 Posted 07/18/2021  1:39 pm  Show Profile   Bookmark this reply Add thecoinguy1964 to your friends list Get a Link to this Reply
I'd say it's lead, JMHO.
"When a strong man, fully armed, guards his house, his possessions are safe."
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5634 Posts
 Posted 07/18/2021  1:46 pm  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
Could be a fragment of a larger meteorite, or a chunk of a large aerial bomb casing or very large artillery shell. Would be interesting to learn the results of a materials analysis.
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 Posted 07/18/2021  2:33 pm  Show Profile   Bookmark this reply Add jimbucks to your friends list Get a Link to this Reply
It very well may be a beryllium alloy. Beryllium is toxic, so I wouldn't handle it until you know what it is. Beryllium is used in nuclear reactors so if it was used as such, it may also be radioactive.
https://periodictable.com/Elements/004/index.html

BTW, there are a number of super-alloys currently being used and experimented with in the aerospace industry which you will not be able to find info about in the open literature due to the secretive nature of their properties. It could be one of those that was either discarded or re-entered the atmosphere.

If I had it, I would first see if it was radioactive so as not to put myself in danger. If it's not, then only an XRF will give you a breakdown of what is in it, everything else is just a guess.
Edited by jimbucks
07/18/2021 3:00 pm
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 Posted 07/18/2021  2:42 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Specific gravity is way too low for lead.
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 Posted 07/18/2021  3:19 pm  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
So, where was it found? Far inland? Coast?
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 Posted 07/18/2021  4:29 pm  Show Profile   Bookmark this reply Add TobyJ to your friends list Get a Link to this Reply
Thanks for all the replies. Very interesting, going to take it to a jewellers and hope they will shed some light on it. It was found embedded on the bank of an estuary when I was out walking. I will certainly update when I find anything out.
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403 Posts
 Posted 07/18/2021  4:35 pm  Show Profile   Bookmark this reply Add halfamind to your friends list Get a Link to this Reply
Hope it IS an interesting alloy or element. Hope it is NOT radioactive.

May be worth noting the specific gravity of nickel is 8.9. SG for pure silver is higher at about ten and a half.

Edited by halfamind
07/18/2021 4:43 pm
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