This gem are have this name because is a loss tooth of yeenoghu,he has loose his tooth in a battle with Corellon Larethian this battle have  ocurred in a invasion of Yenoghu to the material planes Corello ndon't' accepted the advice of the other gods to don't interfere in this hold for 4 years of blood and swearing in the two sides corellon with a hit that Corellon have caused in the Yeenoghu's jaw this hit makes Corellon after this Yeenoghu this hit makes Yeenoghu lose his tooth enranged he bite the neck of Corellon causing a end in this battle Yeenoghu has win the battle and Corellon has returned to the superior planes,the other gods have disappointed with Corellon because he have don't have heard his advices.Now this relic are seeking by adventurers for sell and cultists of Yeenoghu to give a gift for his noble