@King:
Agreed. Swords are made of metal not because it's tough, but because it's malleable as well.
The only seastone weapon we've seen is a spear Capone had, but it makes sense since plenty of spears do use rock for the tip.
@Coookie:
I always considered seastone to be like diamond, incredibly hard but super brittle and not suited to be used as a blade
I always considered seastone to be like an incredibly dense stone. Hence Capone's seastone spear. Its rock carved in to sharp edges.
So while not technically like a metal blade for a sword it'd be like wielding a big slab in the shape of a sword with a sharp enough and if wielded with enough force the sheer speed and strength of it can tear through things.
Never thought it was really similar to diamond given how its portrayed.
–- Update From New Post Merge ---
@Galleon:
Great chapter. So Yamato is pretty much set as to be a Straw Hat pirate. Im cool with it, but I still think the other girl is joining as well. Who said only one could join? And Zeus being a living ClimaTact with shapeshifting powers. Yeah, that is a pretty good upgrade. A shame that the Ulti fight was done so wrongly.
Would be the first time Oda has had two ppl join at the same time.
Especially since he didn't establish Carrot as a member earlier back in WCI but instead used that to have Jimbe officially join.