Why would this ivory artisan, who, according to you, is not trying to trick anyone, label his own creation a "Rare Ivory poker chip". Does the use of the word "rare" bother you. Maybe I'm jumping to conclusions.

http://cgi.ebay.com/Rare-Ivory-poker-chip-25_W0QQitemZ6228703471QQcategoryZ63756QQssPageNameZWDVWQQrdZ1QQcmdZViewItem