Treasure Tree Adam

Treasure Tree Adam (宝樹アダム) is the strongest and highest quality type of wood found in the world. Its immense rarity makes it highly valuable and is considered to be a great treasure. Occasionally, this wood is sold on the black market. Because of its value, it is sold at a very high price. Franky managed to purchase some for 200,000,000.

Both the Oro Jackson and the Thousand Sunny were made from this type of wood. The wood is capable of withstanding cannonballs and gun fire quite easily showing little wear over time. However, even ships built out of this wood need a shipwright to look after them, as it is not completely invincible.

Franky explained the history of one of this kind of tree: once, long, long ago, a endless war rages on an island. People died, the island was destroyed by a rain of bullets and left in ruins. However, the people keep coming back to rebuild the nation near a giant tree, the only one remained intact, and that was Adam.

When the Sunlight Tree Eve was revealed, Usopp noted the connection between their names and wondered if the two were related.

Trivia

 * The Adam Tree is most likely a reference to the bible story of Adam and Eve with the Tree of Knowledge. This can be reinforced by the discovery of the Sunlight Tree Eve on Fishman Island.
 * The Adam Tree may also be a reference to a real tree. A Giant Sequoia, named Adam, is over 200 years old and grows in the Sequoia National Forest in California. It is the 20th largest giant sequoia tree in the world.