Arcadia Discussion Zone

Forums dedicated to history's mysteries, Rennes-le-Château and beyond…

Read the Arcadia Forum House Rules

It is currently 21 Nov 2017 7:55 am

All times are UTC




Post new topic Reply to topic  [ 1 post ] 
Author Message
PostPosted: 18 Oct 2014 11:55 pm 
Offline
Grand Master
User avatar

Joined: 15 Oct 2010 7:47 pm
Posts: 1096
Location: Houston TX
Quote:
Britain's greatest treasure hoard reveals how goldsmiths fooled the Anglo-Saxon world

Scientists, examining Britain’s greatest Anglo-Saxon gold treasure collection, have discovered that it isn’t quite as golden as they thought.Tests on the famous Staffordshire Anglo-Saxon treasure, a vast gold and silver hoard found by a metal detectorist five years ago, have now revealed that the 7th century Anglo-Saxon goldsmiths used sophisticated techniques to make 12-18 karat gold look like 21-23 karat material.

Scientific research, carried out over the past two years on behalf of Birmingham City and Stoke-on-Trent City councils, which jointly own the hoard, has revealed that the Anglo-Saxon goldsmiths had discovered an ingenious way of, metallurgically, dressing mutton up as a lamb. It appears that they deliberately used a weak acid solution – almost certainly ferric chloride – to remove silver and other non-gold impurities from the top few microns of the surfaces of gold artefacts, thus increasing the surfaces’ percentage gold content and therefore improving its appearance. This piece of Anglo-Saxon high tech deception turned the surfaces of relatively low karat, slightly greenish pale yellow gold/silver alloys into high karat, rich deep yellow, apparently high purity gold.


http://www.independent.co.uk/news/science/archaeology/news/britains-greatest-treasure-hoard-reveals-how-goldsmiths-cheated-their-saxon-clients-9799977.html

FS

_________________
"Here's something on which you can really pride yourself
You've discovered you can look inside yourself
You know what that means? You're promoted.
You're no longer a bum; you're an artist."

Hans Richter "Dreams That Money Can Buy"


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

All times are UTC


Who is online

Users browsing this forum: No registered users


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group