Check the background on the Ivory. If it is not certified as non-embargoed, it is illegal to own, give, or sell. The sale of Ivory has been embargoed for many years. Ivory dating from before the embargo is OK if you can get certification of age. Ivory after the embargo is only legal if sold by national game organizations within the country of origin, but not within the US. Be careful who you tell about it.
"The international trade in wildlife is regulated by the Convention on the International Trade in Endangered Species (C.I.T.E.S.). Formed in 1973, this multinational (more than 100 countries) division of the UN, housed in Switzerland, meets every two years to determine guidelines for governing the protection of endangered species. In 1990, C.I.T.E.S. officially changed the status of the African elephant from ‘Appendix 2’ (protected/threatened) to ‘Appendix 1’ (endangered). This change banned all international trade in elephant ivory, though the United States had been under a self-imposed ban since 1989."
JimQ