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"I see ye already have it. Looks a bit rusted though, and I have just the thing for rust protection. It be called "I can't believe it's not sand." It looks like sand, it feels like sand, it tastes like sand, but here's the crazy part - it be not sand! Although it be not guaranteed that ye won't actually end up with sand. So, shall we start the bidding at...oh let's say...four treasure chests full of sparkly gems?"

I Can't Believe It's Not Sand is just as its name implies. The pirate Bashkar tried to sell a box of it to Kagetsu I during the Arawn Losstarot War, but the latter sadly refused to purchase it.

See also