obsidian lava cube 3d model

A single standalone 3D model of an obsidian metal ingot. The ingot is solid black and dark grey, with deep glowing blood-red magma cracks and fiery war runes engraved on all sides. Sharp rectangular boxy shape, clean low-poly geometry, tactical game prop item, god of war aesthetics. NO white blocks on top, NO stone background integrated into the model, NO secondary objects, NO dual models, NO floating debris, NO text, NO smooth realistic curves, NO organic shapes, NO dust clouds.