The Fire Cluster is a vibrant, glowing crystal with a core of intense red and orange hues, resembling a contained flame. Its surface is smooth yet slightly uneven, with subtle cracks that emit a soft, flickering light, suggesting the raw energy within. The crystal is roughly the size of a fist, with a jagged, asymmetrical shape that gives it a natural, untamed appearance, fitting for a high-fantasy anime-inspired MMORPG like Final Fantasy XIV.