Dear Andrews, I have already sent you images of the two sinistral conch I have in my collection. I request you to kindly send me the identification of the second conch (a smaller one). Cost of sinistral type of conch (Indian) i.e. having three or more ridges inside the lip portion is approx. US 15$ to US 25 $ per gram. Due to its high cost there are many fake conch in the market. Ofcourse, it can be identified by expert's eye very easily. I tried to take X-ray images of few of the conch of my collection by using normal digital X-ray machine commonly used for medical purpose, however, could not take good images. My radiologist told me to try High Energy or Industrial X-Ray. I would like to know, does any body have idea about the type of X-Ray machine used to take beautiful images of variety of Conch ? This may help authentification of rare conch varieties. Chandrashekhar Phadke ---------------------------------------------------------------------- [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. ----------------------------------------------------------------------