The Blackcliff Agate is a sleek, high-detail catalyst weapon with a dark, metallic finish and glowing purple accents. Its design features a symmetrical, geometric shape with sharp, angular edges and intricate engravings that pulse with energy. The core of the agate is a polished, translucent purple crystal that emits a faint luminescence, set within a framework of blackened steel with a slightly rough, textured surface to contrast the smooth crystal.