Runic Stone (SCIENCE)

Description (Cliffe)
Runic Stone

Rare Enchanting Item

Designed to be specifically used with Runic Engravings, these stones allow the mana to flow a bit more easily through them with runes. When used in runic etching and enchanting, these stones reduce the cost of the etched rune by 10%

Reference
Chapter 55 "It’s time for the reaping! (Of rewards that is)"