Enchanted by Celaer in the reign of Bel-Korhadris, these small gems are awarded by the Phoenix King to the boldest heroes of Ulthuan in recognition of their bravery. 
A Gem of Courage may only be taken by a model in a Chracian Warhost Army of Infamy.  Single use.  Once per game, when required to make a Break test, the bearer of a Gem of Courage (and their unit) may roll an extra D6 and discard the highest result.