The Prototype Amber is a catalyst weapon with a distinctive design, featuring a large, spherical amber gem at its core, encased in intricate golden metalwork that resembles swirling leaves and branches. The gem emits a soft, warm glow, suggesting its magical properties, while the metal parts are polished to a high shine with subtle engraved patterns that catch the light. The weapon's handle is wrapped in dark leather for a secure grip, contrasting with the luminous amber and golden hues.