User blog comment:Masterreaper/What is the Treasure of One Piece?/@comment-4072803-20140617055525

Maybe it's some new substance of incredible, ridiculous value, worth more than even gold. A material that was common during the Void Century but has now been harshly regulated and controled by the WG, and Roger is the only person besides the Gorosei who has gained a sizeable amount of it.