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Subject:
Acid engraved shells
From:
Barbara Jouvernaux <[log in to unmask]>
Reply To:
Conchologists of America List <[log in to unmask]>
Date:
Mon, 12 Jan 2004 14:03:45 +1300
Content-Type:
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Hello everyone,

I recently picked up a lovely tiger cowry engraved with the Lord's Prayer. I
understand that these were quite popular in the early 1900s and acid was
used for the etching process.
My question is: how is the engraving done? I presume that the pattern or
lettering is somehow covered with a protective layer so that the acid burns
away the area around it. What acid is used and what is used for the
protected areas?
I appreciate any information or links to websites which could shed more
light on the subject.

Thanks and happy shelling,
Barbara Jouvernaux
Walton 2273
NEW ZEALAND

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