The Ancient Casket is a medium-sized, rectangular container with a slightly weathered metallic surface, featuring intricate engravings of unknown alien scripts and symbols. Its edges are reinforced with a darker, corrosion-resistant alloy, and the main body exhibits a mix of matte and slightly reflective finishes, suggesting advanced but ancient craftsmanship. The casket has a secure locking mechanism with a central panel that faintly glows with a soft blue light, indicating possible technological or energy-based contents.