Crystal Marrow

In Game Archive Description

A crystal that contains a sliver of Tatarigami power. Adding this material during smelting will greatly increase the strength and toughness of metals.

In Inazuma, “Tatarigami” refers to the corpse of a divine being and the strange phenomena it creates. They say that before the god that created Crystal Marrow became the Tatarigami, it had many names, one of which was “Orobashi no Mikoto.” Orobashi no Mikoto’s body was as long as the winding seashore, and its voice was so resounding that only the Dark Sea could absorb it. Yet in the end, it too was cut down together with Yashiori Island itself.

Usage

For now this Inazuma local specialty isn’t used for any character any cooking recipe. But in the future, most likely this material will be used as ascension material for upcoming character just like any other local specialty.

Crystal Marrow Locations & Farming Routes

Crystal Marrow is material that formed by Tatarigami power in Inazuma, so obviously this material can be found mostly in the remains of the Great Serpent, Yoshiori Island.

Tatarasuna

First location for Crystal Marrow farming can be found in Tatarasuna, in the small river connected with Mikage Furnace. There’s no specific farming route for this location, just go explore until you’ve take all Crystal Marrow in the area.

Northern Part of Yoshiori Island

Crystal Marrow in this area can be found in the remains of the Great Serpent. You can start farming from Momiji Dyed Court domain then walk north following farming routes up to Musoujin Gorge.

Then teleport to Statue of The Seven, cross the river and walk northwest to the Great Serpent remains. After you’ve done with that area, continue walk to the west and follow farming routes until you’ve take all available Crystal Marrow.

Yoshiori Island (South)

In southern part of Yoshiori Island, farming routes started from same teleport waypoint. It’s pretty easy to follow since remains of the Great Serpent located pretty close one to another.

Start from any routes you want, take all Crystal Marrow in the area, back to teleport waypoint, then continue to the next route.

I’m using Teyvat Interactive Map as reference for this farming guide.