A highly detailed, weathered medieval treasure chest made of dark oak wood, reinforced with aged iron bands and ornate metal carvings. The chest is slightly open, revealing a glimpse of gold coins, sparkling gemstones, and a faint mystical glow emanating from within. The wood has visible grain, deep cracks, and scratches, showing signs of age and use. The metal reinforcements are rusted and slightly corroded, with intricate engravings of mythical creatures. The hinges and lock are heavy and ornate, featuring a snarling dragon motif. The top of the chest has a slightly curved lid with a raised decorative border. The scene includes small cobwebs in the corners of the chest, dust particles in the air, and a faint reflection of candlelight on the metal surfaces. The treasure inside is arranged naturally, with some coins spilling out onto the surface below. The model should be optimized for real-time rendering, with efficient topology and detailed textures, including normal maps for depth and realism.