Esmerald is a green crystalline substance that is grown and harvested by the Esmera. The structure and function of this material is very similar to Almasium and Almasine, however, unlike them, Esmerald is grown using a process that is a closely guarded secret; what is known, is that it occurs deep in the forest. The Esmera cut these crystals into sheets which are used to make their solar panels, which convert the sun’s rays into magic that can then be stored and used later. Scholars at Gestirn discovered the remarkable similarities of Esmerald to Almasium only a few years after the latter was found and refined. The Esmera refuse to let Sapphi industrialists have access to the material, as they believe they would abuse the forests in the quest for power.