I am sorry to hear you are having so much trouble with your ivory.The way I see it there are three things involved here,the quality of the ivory ,the skill of the maker and informing the customer.Ivory has been used for thousands of years and will continue to be used by skilled knife makers.I have sold over 50,000 pound of mammoth ivory in the last fifteen years and have only had two small picees of masodon.Because of the low price of gold and the shut down of the mines most mammoth is now coming from Siberia.I have been making handles for stick tang knives from mammoth tooth roots.They are hard to use but some of the most beautiful handles I have ever seen .I do not make knives but sell material to knifemaker supplyers.I carve for a living and one of the best selling items I make are carvings of musk oxen and mammoth from mammoth teeth.Bcause of the material I end up getting about 20% of them back for repair or replacement.I charge more to make up for it and educate my customers.Dont give up on ivory.Chuck