"Wesley M. Thorsson" wrote:
>
> Cypraea also have problems with fading, particularly violet shades aroud
> the base.  About the only way to keep the color is to keep the shell in
> a freezer.  Of course, that makes it difficult to admire or show to
> friendd.  We have had a number of collectors in Hawaii who had a freezer
> dedicated to keeping their shells that fade.



Those of us that display our shells on open shelves in the SoFla sun use
Scott's Liquid Gold. (It's WD-40 without the sticky.)