Do any of the experts out there disagree with the following summary of the
various comments::
 
All the oils may enhance color, but will not preserve it.
There are three keys to minimizing deterioration, 1) keep em out of light
(UV protected); 2) keep em dry, and 3) keep em cool.
If you do not store em on display, don't use anything -- follow the three
keys.
Add the oils when you wish to enhance the color for display.
 
Note:  Oils mask nicks, scratches and other minor defects in addition to
enhancing color..  Do not buy oiled shells since the actual quality of the
shell will be masked.
 
Marlo
 
Laura Pegler wrote:
 
> Rich,
>
> Do you not use anything on Cypraea, Oliva or Marginella? As a beginning
> sheller, I've been told to put just mineral oil on everything.  What do
> you suggest.  I realize that these three families already have there
> shine, but don't you need to use something to maintain this?
>
> Laura
>
>