Question:
 
One of the recent posts indicated a way to remove calcareous deposits
was to soak the shell in full strength bleach.  I was under the
impression that this was not a good thing to do - at least for anything
other than a short period of time.  I've got a number of specimens I
would like to clean up, but am afraid of damaging the colors.  Is there
a school of thought that advocates preserving the shell in the condition
in which it was collected - or is the general preference to clean them
up as much as possible - or is it simply a matter of personal taste?
 
Just curious,
 
 
Chris