Guest, I presume that you are talking about U. S. rules, which would not apply to the Inuit in Canada. An exception is walrus ivory, which is protected under a Convention signed by both US and Canada (must be shown to be pre-1975).
Looking on the internet, a business in Nevada making scrimshaw, etc. with fossil ivory, sells scrimshawed guitar picks for $75 U. S. Ivory Jack's Trading Co, in Alaska sells all kinds of fossil ivory items: Ivory Jack This concern uses Hong Kong carvers.