Heartsteel is a large, ornate gauntlet with a pulsating heart at its core, symbolizing its life-stealing properties. The gauntlet features intricate metallic designs with a mix of sharp edges and smooth curves, adorned with glowing red veins that mimic blood vessels. The surface is a combination of polished steel and rough, battle-worn textures, with the central heart emitting a faint crimson glow, suggesting its magical nature.