What is Shanks' sword made of?


At Marineford, Shanks stopped Akainu with his sword. That much we all saw, but
what I noticed was that he did not use Haki on the sword and yet it did not
melt.

This has been bugging me. How is this possible, if Akainu's Lava can burn even
fire but not melt the sword which is not even infused with Haki.




The black coloring induced by Haki was only introduced after the timeskip.
Before that, when Haki is used, it is not visible with two exceptions: Garp's
punch at Enies Lobby and Whitebeard's fist at Marineford.

For example, in chapter 512, Rayleigh faces Kizaru in a sword duel. Rayleigh
is using a simple sword while the admiral is wielding an energy sword made of
pure light. In this fight, for Rayleigh's sword to be effective against
Kizaru, he is obviously using Haki, even if the Haki is not visible at all.
This is confirmed by the fact that Rayleigh's sword swing injures Kizaru, a
logia user.

Therefore, Shanks' sword is not "made" of anything special (i.e. seastone), he
was simply embedding it with Haki. He may be wielding one of the world's great
swords but this has yet to be confirmed.

[![enter image description
here](https://i.stack.imgur.com/ClG3T.jpg)](https://i.stack.imgur.com/ClG3T.jpg)




The black coloring induced by Haki was only introduced after the timeskip.
Before that, when Haki is used, it is not visible with two exceptions: Garp's
punch at Enies Lobby and Whitebeard's fist at Marineford.

For example, in chapter 512, Rayleigh faces Kizaru in a sword duel. Rayleigh
is using a simple sword while the admiral is wielding an energy sword made of
pure light. In this fight, for Rayleigh's sword to be effective against
Kizaru, he is obviously using Haki, even if the Haki is not visible at all.
This is confirmed by the fact that Rayleigh's sword swing injures Kizaru, a
logia user.

Therefore, Shanks' sword is not "made" of anything special (i.e. seastone), he
was simply embedding it with Haki. He may be wielding one of the world's great
swords but this has yet to be confirmed.

[![enter image description
here](https://i.stack.imgur.com/ClG3T.jpg)](https://i.stack.imgur.com/ClG3T.jpg)

