All legitimate scrimshaw is done on legally acquired ivory, fossilized mammoth tusk, and fossilized walrus tusk, which is short in supply and rising in cost.
(All legitimate scrimshaw; is done; ) (legally acquired ivory; fossilized; T:mammoth tusk) (walrus tusk; is; short in supply and rising in cost)
All legitimate scrimshaw legally acquired ivory walrus tusk
is done fossilized is
T:mammoth tusk
short in supply and rising in cost