The chip shown below is posted at

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=748714431

I believe the chips are clay composition and have checked with two others who specialize in both clays and ivories; they agree. I then notified the seller of my belief but using the return address option got a non-delivery notice "no such address." I tried a second time using a different link provided by - same result.

If anyone believes these are ivories, please advise me.

I have not contacted the buyer--who is very knowledgeable though I am now tempted to do so since I cannot reach the seller. Any suggestions on what I should do?