This is an authentic piece of Titanic's salvaged hull, from what's known as the "big piece." Oddly, this slightly enlarged piece of steel closely resembles the state of Louisiana.

This is an authentic Titanic rusticle. It is a rusty cement-like growth containing about 36% iron. Rusticles are deep sea microbes that feed off the iron of the ship. This piece is roughly the size of an average marble.