Cursed Amulet Amid Floating Icebergs

Photorealistic, ultra-detailed scene: a cursed amulet lies on a jagged slab of ice among towering icebergs in a frozen polar sea at twilight. The amulet is ancient and ornate, forged from tarnished silver with weathered runic engravings and a central dark gemstone that glows with a malevolent red-blue aura. Wisps of smoky cobalt light coil around it forming faint runes in the air. Frost clings to the metal; micro-scratches, salt spray, and ice crystals catch the cold light. Surrounding icebergs glow blue under a pale sun behind storm clouds; mist drifts over the frigid water. The composition uses cinematic lighting, shallow depth of field with a sharp foreground amulet and distant icebergs, high detail, 8k realism.