Demon's Souls Wiki

Chunk of Marrowstone is an Upgrade Material in Demon's Souls.

In-Game Description

Very thin, sharp, ore. Enhances daggers, knives, spears and so on.
An ore used to make close-range stabbing weapons that easily deliver critical strikes. Thought to be the crystallized form of minerals inside human blood. Weapons can be strengthened by Marrowstones up to a maximum of level 5.