Abyssal rune stone

Hi,

Does anyone know what ABYSSAL RUNE STONE is for?

Perhaps a screenshot or a link would help.

Thanks,

i'm guessing this forum just isn't that active right now :( hopefully that changes.. did you ever find out? it's a pretty expensive item apparently

Nope still asking.

Anyone know?

is it the same as Soul Rune Stone? Used as a material for refinement manual G13