Hi Ronald!
There are one website that clearly state how to clean live and dead
seashell. Hope it can help you.
    http://www.seashells.org/cleaning.htm
Regards
Halim


>From: ronald noseworthy <[log in to unmask]>
>Reply-To: Conchologists of America List <[log in to unmask]>
>To: [log in to unmask]
>Subject: Cleaning information needed
>Date: Tue, 1 May 2001 07:35:10 -0700
>
>Hi, everyone!
>
>I am studying the molluscs of Chejudo, South Korea.  I have found that the
>shells of Tegula pfeifferi carpenteri are usually covered with a thick
>growth of algae.  I need to clean some of the shells to see the sculpture.
>I have tried to remove it with a 50/50 vinegar/water solution but with
>little success.  Is there something more effective that will remove the
>coat of algae without damaging the surface of the shell?
>
>Also, my wife would like to use some trochid shells for her shellcraft.
>She needs to remove the calcareous surface layer to reveal the prismatic
>layer beneath.  What would be best for this?  I read somewhere that a weak
>solution of muriatic acid is efective?  Is this correct?
>
>Any help anyone can give me would be greatly appreciated.
>
>Conchologically yours,
>Ron Noseworthy
>
>
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