Sadly you did damage the shells by the use of vinegar, which is an acid. Acids etch the surface of the shell. In fact, given a long enough exposure and/or a strong enough acid, they will completely dissolve the shell. Proper use of bleach would have solved your problem without damaging the shell, but you are beyond that point now. Rubbing in mineral oil or baby oil, then wiping off the excess, will probably improve the appearance of the shell, making them look more or less as they look when wet, though the original brilliant gloss may never be completely restored. Some people prefer to use WD-40, or a type of furniture polish call [something]gold, I don't remember the exact name. Don't use vegetable products like vegetable oil or olive oil. These will produce the same effect initially, but may later turn rancid and discolored. Good luck. Paul M. ---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1 Type your email address and name in the appropriate box and click leave the list. ----------------------------------------------------------------------